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Bitcoin Core version 0.13.0 is now available from:

  <https://bitcoin.org/bin/bitcoin-core-0.13.0/>

This is a new major version release, including new features, various bugfixes
and performance improvements, as well as updated translations.

Please report bugs using the issue tracker at github:

  <https://github.com/bitcoin/bitcoin/issues>

To receive security and update notifications, please subscribe to:

  <https://bitcoincore.org/en/list/announcements/join/>

Compatibility
==============

Microsoft ended support for Windows XP on [April 8th, 2014](https://www.microsoft.com/en-us/WindowsForBusiness/end-of-xp-support),
an OS initially released in 2001. This means that not even critical security
updates will be released anymore. Without security updates, using a bitcoin
wallet on a XP machine is irresponsible at least.

In addition to that, with 0.12.x there have been varied reports of Bitcoin Core
randomly crashing on Windows XP. It is [not clear](https://github.com/bitcoin/bitcoin/issues/7681#issuecomment-217439891)
what the source of these crashes is, but it is likely that upstream
libraries such as Qt are no longer being tested on XP.

We do not have time nor resources to provide support for an OS that is
end-of-life. From 0.13.0 on, Windows XP is no longer supported. Users are
suggested to upgrade to a newer verion of Windows, or install an alternative OS
that is supported.

No attempt is made to prevent installing or running the software on Windows XP,
you can still do so at your own risk, but do not expect it to work: do not
report issues about Windows XP to the issue tracker.

Notable changes
===============

Database cache memory increased
--------------------------------

As a result of growth of the UTXO set, performance with the prior default
database cache of 100 MiB has suffered.
For this reason the default was changed to 300 MiB in this release.

For nodes on low-memory systems, the database cache can be changed back to
100 MiB (or to another value) by either:

- Adding `dbcache=100` in bitcoin.conf
- Changing it in the GUI under `Options → Size of database cache`

Note that the database cache setting has the most performance impact
during initial sync of a node, and when catching up after downtime.

bitcoin-cli: arguments privacy
--------------------------------

The RPC command line client gained a new argument, `-stdin`
to read extra arguments from standard input, one per line until EOF/Ctrl-D.
For example:

    $ echo -e "mysecretcode\n120" | src/bitcoin-cli -stdin walletpassphrase

It is recommended to use this for sensitive information such as wallet
passphrases, as command-line arguments can usually be read from the process
table by any user on the system.

C++11 and Python 3
-------------------

Various code modernizations have been done. The Bitcoin Core code base has
started using C++11. This means that a C++11-capable compiler is now needed for
building. Effectively this means GCC 4.7 or higher, or Clang 3.3 or higher.

When cross-compiling for a target that doesn't have C++11 libraries, configure with
`./configure --enable-glibc-back-compat ... LDFLAGS=-static-libstdc++`.

For running the functional tests in `qa/rpc-tests`, Python3.4 or higher is now
required.

Linux ARM builds
------------------

Due to popular request, Linux ARM builds have been added to the uploaded
executables.

The following extra files can be found in the download directory or torrent:

- `bitcoin-${VERSION}-arm-linux-gnueabihf.tar.gz`: Linux binaries for the most
  common 32-bit ARM architecture.
- `bitcoin-${VERSION}-aarch64-linux-gnu.tar.gz`: Linux binaries for the most
  common 64-bit ARM architecture.

ARM builds are still experimental. If you have problems on a certain device or
Linux distribution combination please report them on the bug tracker, it may be
possible to resolve them.

Note that Android is not considered ARM Linux in this context. The executables
are not expected to work out of the box on Android.

New mempool information RPC calls
---------------------------------

RPC calls have been added to output detailed statistics for individual mempool
entries, as well as to calculate the in-mempool ancestors or descendants of a
transaction: see `getmempoolentry`, `getmempoolancestors`, `getmempooldescendants`.

Fee filtering of invs (BIP 133)
------------------------------------

The optional new p2p message "feefilter" is implemented and the protocol
version is bumped to 70013. Upon receiving a feefilter message from a peer,
a node will not send invs for any transactions which do not meet the filter
feerate. [BIP 133](https://github.com/bitcoin/bips/blob/master/bip-0133.mediawiki)

Compact Block support (BIP 152)
-------------------------------

Support for block relay using the Compact Blocks protocol has been implemented
in PR 8068.

The primary goal is reducing the bandwidth spikes at relay time, though in many
cases it also reduces propagation relay. It is automatically enabled between
compatible peers.
[BIP 152](https://github.com/bitcoin/bips/blob/master/bip-0152.mediawiki)

Hierarchical Deterministic Key Generation
-----------------------------------------
Newly created wallets will use hierarchical deterministic key generation
according to BIP32 (keypath m/0'/0'/k').
Existing wallets will still use traditional key generation.

Backups of HD wallets, regardless of when they have been created, can
therefore be used to re-generate all possible private keys, even the
ones which haven't already been generated during the time of the backup.

HD key generation for new wallets can be disabled by `-usehd=0`. Keep in
mind that this flag only has affect on newly created wallets.
You can't disable HD key generation once you have created a HD wallet.

There is no distinction between internal (change) and external keys.

HD wallets are incompatible with older versions of Bitcoin Core.

[Pull request](https://github.com/bitcoin/bitcoin/pull/8035/files), [BIP 32](https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki)

Low-level P2P changes
----------------------

- The P2P alert system has been removed in PR #7692 and the `alert` P2P message
  is no longer supported.

- The transaction relay mechanism used to relay one quarter of all transactions
  instantly, while queueing up the rest and sending them out in batch. As
  this resulted in chains of dependent transactions being reordered, it
  systematically hurt transaction relay. The relay code was redesigned in PRs
  #7840 and #8082, and now always batches transactions announcements while also
  sorting them according to dependency order. This significantly reduces orphan
  transactions. To compensate for the removal of instant relay, the frequency of
  batch sending was doubled for outgoing peers.

- Since PR 7840 the BIP35 mempool command is also subject to batch processing.

- The maximum size of orphan transactions that are kept in memory until their
  ancestors arrive has been raised in PR 8179 from 5000 to 99999 bytes. They
  are now also removed from memory when they are included in a block, conflict
  with a block, and time out after 20 minutes.

- We respond at most once to a getaddr request during the lifetime of a
  connection since PR 7856.

- Connections to peers who have recently been the first one to give us a valid
  new block or transaction are protected from disconnections since PR 8084.

Low-level RPC changes
----------------------

- `gettxoutsetinfo` UTXO hash (`hash_serialized`) has changed. There was a divergence between
  32-bit and 64-bit platforms, and the txids were missing in the hashed data. This has been
  fixed, but this means that the output will be different than from previous versions.

- Full UTF-8 support in the RPC API. Non-ASCII characters in, for example,
  wallet labels have always been malformed because they weren't taken into account
  properly in JSON RPC processing. This is no longer the case. This also affects
  the GUI debug console.

- Asm script outputs replacements for OP_NOP2 and OP_NOP3

  - OP_NOP2 has been renamed to OP_CHECKLOCKTIMEVERIFY by [BIP 
65](https://github.com/bitcoin/bips/blob/master/bip-0065.mediawiki)

  - OP_NOP3 has been renamed to OP_CHECKSEQUENCEVERIFY by [BIP 
112](https://github.com/bitcoin/bips/blob/master/bip-0112.mediawiki)

  - The following outputs are affected by this change:

    - RPC `getrawtransaction` (in verbose mode)
    - RPC `decoderawtransaction`
    - RPC `decodescript`
    - REST `/rest/tx/` (JSON format)
    - REST `/rest/block/` (JSON format when including extended tx details)
    - `bitcoin-tx -json`

Low-level ZMQ changes
----------------------

- Each ZMQ notification now contains an up-counting sequence number that allows
  listeners to detect lost notifications.
  The sequence number is always the last element in a multi-part ZMQ notification and
  therefore backward compatible. Each message type has its own counter.
  PR [#7762](https://github.com/bitcoin/bitcoin/pull/7762).

0.13.0 Change log
=================

Detailed release notes follow. This overview includes changes that affect
behavior, not code moves, refactors and string updates. For convenience in locating
the code changes and accompanying discussion, both the pull request and
git merge commit are mentioned.

### RPC and other APIs

- #7156 `9ee02cf` Remove cs_main lock from `createrawtransaction` (laanwj)
- #7326 `2cd004b` Fix typo, wrong information in gettxout help text (paveljanik)
- #7222 `82429d0` Indicate which transactions are signaling opt-in RBF (sdaftuar)
- #7480 `b49a623` Changed getnetworkhps value to double to avoid overflow (instagibbs)
- #7550 `8b958ab` Input-from-stdin mode for bitcoin-cli (laanwj)
- #7670 `c9a1265` Use cached block hash in blockToJSON() (rat4)
- #7726 `9af69fa` Correct importaddress help reference to importpubkey (CypherGrue)
- #7766 `16555b6` Register calls where they are defined (laanwj)
- #7797 `e662a76` Fix generatetoaddress failing to parse address (mruddy)
- #7774 `916b15a` Add versionHex in getblock and getblockheader JSON results (mruddy)
- #7863 `72c54e3` Getblockchaininfo: make bip9_softforks an object, not an array (rustyrussell)
- #7842 `d97101e` Do not print minping time in getpeerinfo when no ping received yet (paveljanik)
- #7518 `be14ca5` Add multiple options to fundrawtransaction (promag)
- #7756 `9e47fce` Add cursor to iterate over utxo set, use this in `gettxoutsetinfo` (laanwj)
- #7848 `88616d2` Divergence between 32- and 64-bit when hashing >4GB affects `gettxoutsetinfo` (laanwj)
- #7827 `4205ad7` Speed up `getchaintips` (mrbandrews)
- #7762 `a1eb344` Append a message sequence number to every ZMQ notification (jonasschnelli)
- #7688 `46880ed` List solvability in listunspent output and improve help (sipa)
- #7926 `5725807` Push back `getaddednodeinfo` dead value (instagibbs)
- #7953 `0630353` Create `signmessagewithprivkey` rpc (achow101)
- #8049 `c028c7b` Expose information on whether transaction relay is enabled in `getnetworkinfo` (laanwj)
- #7967 `8c1e49b` Add feerate option to `fundrawtransaction` (jonasschnelli)
- #8118 `9b6a48c` Reduce unnecessary hashing in `signrawtransaction` (jonasnick)
- #7957 `79004d4` Add support for transaction sequence number (jonasschnelli)
- #8153 `75ec320` `fundrawtransaction` feeRate: Use BTC/kB (MarcoFalke)
- #7292 `7ce9ac5` Expose ancestor/descendant information over RPC (sdaftuar)
- #8171 `62fcf27` Fix createrawtx sequence number unsigned int parsing (jonasschnelli)
- #7892 `9c3d0fa` Add full UTF-8 support to RPC (laanwj)
- #8317 `304eff3` Don't use floating point in rpcwallet (MarcoFalke)
- #8258 `5a06ebb` Hide softfork in `getblockchaininfo` if timeout is 0 (jl2012)
- #8244 `1922e5a` Remove unnecessary LOCK(cs_main) in getrawmempool (dcousens)

### Block and transaction handling

- #7056 `6a07208` Save last db read (morcos)
- #6842 `0192806` Limitfreerelay edge case bugfix (ptschip)
- #7084 `11d74f6` Replace maxFeeRate of 10000*minRelayTxFee with maxTxFee in mempool (MarcoFalke)
- #7539 `9f33dba` Add tags to mempool's mapTx indices (sdaftuar)
- #7592 `26a2a72` Re-remove ERROR logging for mempool rejects (laanwj)
- #7187 `14d6324` Keep reorgs fast for SequenceLocks checks (morcos)
- #7594 `01f4267` Mempool: Add tracking of ancestor packages (sdaftuar)
- #7904 `fc9e334` Txdb: Fix assert crash in new UTXO set cursor (laanwj)
- #7927 `f9c2ac7` Minor changes to dbwrapper to simplify support for other databases (laanwj)
- #7933 `e26b620` Fix OOM when deserializing UTXO entries with invalid length (sipa)
- #8020 `5e374f7` Use SipHash-2-4 for various non-cryptographic hashes (sipa)
- #8076 `d720980` VerifyDB: don't check blocks that have been pruned (sdaftuar)
- #8080 `862fd24` Do not use mempool for GETDATA for tx accepted after the last mempool req (gmaxwell)
- #7997 `a82f033` Replace mapNextTx with slimmer setSpends (kazcw)
- #8220 `1f86d64` Stop trimming when mapTx is empty (sipa)
- #8273 `396f9d6` Bump `-dbcache` default to 300MiB (laanwj)
- #7225 `eb33179` Eliminate unnecessary call to CheckBlock (sdaftuar)
- #7907 `006cdf6` Optimize and Cleanup CScript::FindAndDelete (pstratem)
- #7917 `239d419` Optimize reindex (sipa)
- #7763 `3081fb9` Put hex-encoded version in UpdateTip (sipa)
- #8149 `d612837` Testnet-only segregated witness (sipa)
- #8305 `3730393` Improve handling of unconnecting headers (sdaftuar)
- #8363 `fca1a41` Rename "block cost" to "block weight" (sdaftuar)

### P2P protocol and network code

- #6589 `dc0305d` Log bytes recv/sent per command (jonasschnelli)
- #7164 `3b43cad` Do not download transactions during initial blockchain sync (ptschip)
- #7458 `898fedf` peers.dat, banlist.dat recreated when missing (kirkalx)
- #7637 `3da5d1b` Fix memleak in TorController (laanwj, jonasschnelli)
- #7553 `9f14e5a` Remove vfReachable and modify IsReachable to only use vfLimited (pstratem)
- #7708 `9426632` De-neuter NODE_BLOOM (pstratem)
- #7692 `29b2be6` Remove P2P alert system (btcdrak)
- #7542 `c946a15` Implement "feefilter" P2P message (morcos)
- #7573 `352fd57` Add `-maxtimeadjustment` command line option (mruddy)
- #7570 `232592a` Add IPv6 Link-Local Address Support (mruddy)
- #7874 `e6a4d48` Improve AlreadyHave (morcos)
- #7856 `64e71b3` Only send one GetAddr response per connection (gmaxwell)
- #7868 `7daa3ad` Split DNS resolving functionality out of net structures (theuni)
- #7919 `7617682` Fix headers announcements edge case (sdaftuar)
- #7514 `d9594bf` Fix IsInitialBlockDownload for testnet (jmacwhyte)
- #7959 `03cf6e8` fix race that could fail to persist a ban (kazcw)
- #7840 `3b9a0bf` Several performance and privacy improvements to inv/mempool handling (sipa)
- #8011 `65aecda` Don't run ThreadMessageHandler at lowered priority (kazcw)
- #7696 `5c3f8dd` Fix de-serialization bug where AddrMan is left corrupted (EthanHeilman)
- #7932 `ed749bd` CAddrMan::Deserialize handle corrupt serializations better (pstratem)
- #7906 `83121cc` Prerequisites for p2p encapsulation changes (theuni)
- #8033 `18436d8` Fix Socks5() connect failures to be less noisy and less unnecessarily scary (wtogami)
- #8082 `01d8359` Defer inserting into maprelay until just before relaying (gmaxwell)
- #7960 `6a22373` Only use AddInventoryKnown for transactions (sdaftuar)
- #8078 `2156fa2` Disable the mempool P2P command when bloom filters disabled (petertodd)
- #8065 `67c91f8` Addrman offline attempts (gmaxwell)
- #7703 `761cddb` Tor: Change auth order to only use password auth if -torpassword (laanwj)
- #8083 `cd0c513` Add support for dnsseeds with option to filter by servicebits (jonasschnelli)
- #8173 `4286f43` Use SipHash for node eviction (sipa)
- #8154 `1445835` Drop vAddrToSend after sending big addr message (kazcw)
- #7749 `be9711e` Enforce expected outbound services (sipa)
- #8208 `0a64777` Do not set extra flags for unfiltered DNS seed results (sipa)
- #8084 `e4bb4a8` Add recently accepted blocks and txn to AttemptToEvictConnection (gmaxwell)
- #8113 `3f89a53` Rework addnode behaviour (sipa)
- #8179 `94ab58b` Evict orphans which are included or precluded by accepted blocks (gmaxwell)
- #8068 `e9d76a1` Compact Blocks (TheBlueMatt)
- #8204 `0833894` Update petertodd's testnet seed (petertodd)
- #8247 `5cd35d3` Mark my dnsseed as supporting filtering (sipa)
- #8275 `042c323` Remove bad chain alert partition check (btcdrak)
- #8271 `1bc9c80` Do not send witnesses in cmpctblock (sipa)
- #8312 `ca40ef6` Fix mempool DoS vulnerability from malleated transactions (sdaftuar)
- #7180 `16ccb74` Account for `sendheaders` `verack` messages (laanwj)
- #8102 `425278d` Bugfix: use global ::fRelayTxes instead of CNode in version send (sipa)

### Build system

- #7302 `41f1a3e` C++11 build/runtime fixes (theuni)
- #7322 `fd9356b` c++11: add scoped enum fallbacks to CPPFLAGS rather than defining them locally (theuni)
- #7441 `a6771fc` Use Debian 8.3 in gitian build guide (fanquake)
- #7349 `152a821` Build against system UniValue when available (luke-jr)
- #7520 `621940e` LibreSSL doesn't define OPENSSL_VERSION, use LIBRESSL_VERSION_TEXT instead (paveljanik)
- #7528 `9b9bfce` autogen.sh: warn about needing autoconf if autoreconf is not found (knocte)
- #7504 `19324cf` Crystal clean make clean (paveljanik)
- #7619 `18b3f1b` Add missing sudo entry in gitian VM setup (btcdrak)
- #7616 `639ec58`  [depends] Delete unused patches  (MarcoFalke)
- #7658 `c15eb28` Add curl to Gitian setup instructions (btcdrak)
- #7710 `909b72b` [Depends] Bump miniupnpc and config.guess+sub (fanquake)
- #7723 `5131005` build: python 3 compatibility (laanwj)
- #7477 `28ad4d9` Fix quoting of copyright holders in configure.ac (domob1812)
- #7711 `a67bc5e` [build-aux] Update Boost & check macros to latest serials (fanquake)
- #7788 `4dc1b3a` Use relative paths instead of absolute paths in protoc calls (paveljanik)
- #7809 `bbd210d` depends: some base fixes/changes (theuni)
- #7603 `73fc922` Build System: Use PACKAGE_TARNAME in NSIS script (JeremyRand)
- #7905 `187186b` test: move accounting_tests and rpc_wallet_tests to wallet/test (laanwj)
- #7911 `351abf9` leveldb: integrate leveldb into our buildsystem (theuni)
- #7944 `a407807` Re-instate TARGET_OS=linux in configure.ac. Removed by 351abf9e035 (randy-waterhouse)
- #7920 `c3e3cfb` Switch Travis to Trusty (theuni)
- #7954 `08b37c5` build: quiet annoying warnings without adding new ones (theuni)
- #7165 `06162f1` build: Enable C++11 in build, require C++11 compiler (laanwj)
- #7982 `559fbae` build: No need to check for leveldb atomics (theuni)
- #8002 `f9b4582` [depends] Add -stdlib=libc++ to darwin CXX flags (fanquake)
- #7993 `6a034ed` [depends] Bump Freetype, ccache, ZeroMQ, miniupnpc, expat (fanquake)
- #8167 `19ea173` Ship debug tarballs/zips with debug symbols (theuni)
- #8175 `f0299d8` Add --disable-bench to config flags for windows (laanwj)
- #7283 `fd9881a` [gitian] Default reference_datetime to commit author date (MarcoFalke)
- #8181 `9201ce8` Get rid of `CLIENT_DATE` (laanwj)
- #8133 `fde0ac4` Finish up out-of-tree changes (theuni)
- #8188 `65a9d7d` Add armhf/aarch64 gitian builds (theuni)
- #8194 `cca1c8c` [gitian] set correct PATH for wrappers (MarcoFalke)
- #8198 `5201614` Sync ax_pthread with upstream draft4 (fanquake)
- #8210 `12a541e` [Qt] Bump to Qt5.6.1 (jonasschnelli)
- #8285 `da50997` windows: Add testnet link to installer (laanwj)
- #8304 `0cca2fe` [travis] Update SDK_URL (MarcoFalke)
- #8310 `6ae20df` Require boost for bench (theuni)
- #8315 `2e51590` Don't require sudo for Linux (theuni)
- #8314 `67caef6` Fix pkg-config issues for 0.13 (theuni)

### GUI

- #7154 `00b4b8d` Add InMempool() info to transaction details (jonasschnelli)
- #7068 `5f3c670` [RPC-Tests] add simple way to run rpc test over QT clients (jonasschnelli)
- #7218 `a1c185b` Fix misleading translation (MarcoFalke)
- #7214 `be9a9a3` qt5: Use the fixed font the system recommends (MarcoFalke)
- #7256 `08ab906` Add note to coin control dialog QT5 workaround (fanquake)
- #7255 `e289807` Replace some instances of formatWithUnit with formatHtmlWithUnit (fanquake)
- #7317 `3b57e9c` Fix RPCTimerInterface ordering issue (jonasschnelli)
- #7327 `c079d79` Transaction View: LastMonth calculation fixed (crowning-)
- #7334 `e1060c5` coincontrol workaround is still needed in qt5.4 (fixed in qt5.5) (MarcoFalke)
- #7383 `ae2db67` Rename "amount" to "requested amount" in receive coins table (jonasschnelli)
- #7396 `cdcbc59` Add option to increase/decrease font size in the console window (jonasschnelli)
- #7437 `9645218` Disable tab navigation for peers tables (Kefkius)
- #7604 `354b03d` build: Remove spurious dollar sign. Fixes #7189 (dooglus)
- #7605 `7f001bd` Remove openssl info from init/log and from Qt debug window (jonasschnelli)
- #7628 `87d6562` Add 'copy full transaction details' option (ericshawlinux)
- #7613 `3798e5d` Add autocomplete to bitcoin-qt's console window (GamerSg)
- #7668 `b24266c` Fix history deletion bug after font size change (achow101)
- #7680 `41d2dfa` Remove reflection from `about` icon (laanwj)
- #7686 `f034bce` Remove 0-fee from send dialog (MarcoFalke)
- #7506 `b88e0b0` Use CCoinControl selection in CWallet::FundTransaction (promag)
- #7732 `0b98dd7` Debug window: replace "Build date" with "Datadir" (jonasschnelli)
- #7761 `60db51d` remove trailing output-index from transaction-id (jonasschnelli)
- #7772 `6383268` Clear the input line after activating autocomplete (paveljanik)
- #7925 `f604bf6` Fix out-of-tree GUI builds (laanwj)
- #7939 `574ddc6` Make it possible to show details for multiple transactions (laanwj)
- #8012 `b33824b` Delay user confirmation of send (Tyler-Hardin)
- #8006 `7c8558d` Add option to disable the system tray icon (Tyler-Hardin)
- #8046 `169d379` Fix Cmd-Q / Menu Quit shutdown on OSX (jonasschnelli)
- #8042 `6929711` Don't allow to open the debug window during splashscreen & verification state (jonasschnelli)
- #8014 `77b49ac` Sort transactions by date (Tyler-Hardin)
- #8073 `eb2f6f7` askpassphrasedialog: Clear pass fields on accept (rat4)
- #8129 `ee1533e` Fix RPC console auto completer (UdjinM6)
- #7636 `fb0ac48` Add bitcoin address label to request payment QR code (makevoid)
- #8231 `760a6c7` Fix a bug where the SplashScreen will not be hidden during startup (jonasschnelli)
- #8256 `af2421c` BUG: bitcoin-qt crash (fsb4000)
- #8257 `ff03c50` Do not ask a UI question from bitcoind (sipa)
- #8288 `91abb77` Network-specific example address (laanwj)
- #7707 `a914968` UI support for abandoned transactions (jonasschnelli)
- #8207 `f7a403b` Add a link to the Bitcoin-Core repository and website to the About Dialog (MarcoFalke)
- #8281 `6a87eb0` Remove client name from debug window (laanwj)

### Wallet

- #7262 `fc08994` Reduce inefficiency of GetAccountAddress() (dooglus)
- #7537 `78e81b0` Warn on unexpected EOF while salvaging wallet (laanwj)
- #7521 `3368895` Don't resend wallet txs that aren't in our own mempool (morcos)
- #7576 `86a1ec5` Move wallet help string creation to CWallet (jonasschnelli)
- #7577 `5b3b5a7` Move "load wallet phase" to CWallet (jonasschnelli)
- #7608 `0735c0c` Move hardcoded file name out of log messages (MarcoFalke)
- #7649 `4900641` Prevent multiple calls to CWallet::AvailableCoins (promag)
- #7646 `e5c3511` Fix lockunspent help message (promag)
- #7558 `b35a591` Add import/removeprunedfunds rpc call (instagibbs)
- #7691 `30c2dd8` Refactor wallet/init interaction (jonasschnelli)
- #6215 `48c5adf` add bip32 pub key serialization (jonasschnelli)
- #7913 `bafd075` Fix for incorrect locking in GetPubKey() (keystore.cpp) (yurizhykin)
- #7816 `0c95ebc` Slighly refactor GetOldestKeyPoolTime() (jonasschnelli)
- #8036 `41138f9` init: Move berkeleydb version reporting to wallet (laanwj)
- #8028 `373b50d` Fix insanity of CWalletDB::WriteTx and CWalletTx::WriteToDisk (pstratem)
- #8061 `f6b7df3` Improve Wallet encapsulation (pstratem)
- #7891 `950be19` Always require OS randomness when generating secret keys (sipa)
- #7689 `b89ef13` Replace OpenSSL AES with ctaes-based version (sipa)
- #7825 `f972b04` Prevent multiple calls to ExtractDestination (pedrobranco)
- #8137 `243ac0c` Improve CWallet API with new AccountMove function (pstratem)
- #8142 `52c3f34` Improve CWallet API  with new GetAccountPubkey function (pstratem)
- #8035 `b67a472` Add simplest BIP32/deterministic key generation implementation (jonasschnelli)
- #7687 `a6ddb19` Stop treating importaddress'ed scripts as change (sipa)
- #8298 `aef3811` wallet: Revert input selection post-pruning (laanwj)
- #8324 `bc94b87` Keep HD seed during salvagewallet (jonasschnelli)
- #8323 `238300b` Add HD keypath to CKeyMetadata, report metadata in validateaddress (jonasschnelli)
- #8367 `3b38a6a` Ensure <0.13 clients can't open HD wallets (jonasschnelli)

### Tests and QA

- #7320 `d3dfc6d` Test walletpassphrase timeout (MarcoFalke)
- #7208 `47c5ed1` Make max tip age an option instead of chainparam (laanwj)
- #7372 `21376af` Trivial: [qa] wallet: Print maintenance (MarcoFalke)
- #7280 `668906f` [travis] Fail when documentation is outdated (MarcoFalke)
- #7177 `93b0576` [qa] Change default block priority size to 0 (MarcoFalke)
- #7236 `02676c5` Use createrawtx locktime parm in txn_clone (dgenr8)
- #7212 `326ffed` Adds unittests for CAddrMan and CAddrinfo, removes source of non-determinism (EthanHeilman)
- #7490 `d007511` tests: Remove May15 test (laanwj)
- #7531 `18cb2d5` Add bip68-sequence.py to extended rpc tests (btcdrak)
- #7536 `ce5fc02` test: test leading spaces for ParseHex (laanwj)
- #7620 `1b68de3` [travis] Only run check-doc.py once (MarcoFalke)
- #7455 `7f96671` [travis] Exit early when check-doc.py fails (MarcoFalke)
- #7667 `56d2c4e` Move GetTempPath() to testutil (musalbas)
- #7517 `f1ca891` test: script_error checking in script_invalid tests (laanwj)
- #7684 `3d0dfdb` Extend tests (MarcoFalke)
- #7697 `622fe6c` Tests: make prioritise_transaction.py more robust (sdaftuar)
- #7709 `efde86b` Tests: fix missing import in mempool_packages (sdaftuar)
- #7702 `29e1131` Add tests verifychain, lockunspent, getbalance, listsinceblock (MarcoFalke)
- #7720 `3b4324b` rpc-test: Normalize assert() (MarcoFalke)
- #7757 `26794d4` wallet: Wait for reindex to catch up (MarcoFalke)
- #7764 `a65b36c` Don't run pruning.py twice (MarcoFalke)
- #7773 `7c80e72` Fix comments in tests (btcdrak)
- #7489 `e9723cb` tests: Make proxy_test work on travis servers without IPv6 (laanwj)
- #7778 `ff5874b` Bug fixes and refactor (MarcoFalke)
- #7801 `70ac71b` Remove misleading "errorString syntax" (MarcoFalke)
- #7803 `401c65c` maxblocksinflight: Actually enable test (MarcoFalke)
- #7802 `3bc71e1` httpbasics: Actually test second connection (MarcoFalke)
- #7818 `3911a0a` Refactor script tests (sipa)
- #7849 `ab8586e` tests: add varints_bitpatterns test (laanwj)
- #7846 `491171f` Clean up lockorder data of destroyed mutexes (sipa)
- #7853 `6ef5e00` py2: Unfiddle strings into bytes explicitly (MarcoFalke)
- #7878 `53adc83` [test] bctest.py: Revert faa41ee (MarcoFalke)
- #7798 `cabba24` [travis] Print the commit which was evaluated (MarcoFalke)
- #7833 `b1bf511` tests: Check Content-Type header returned from RPC server (laanwj)
- #7851 `fa9d86f` pull-tester: Don't mute zmq ImportError (MarcoFalke)
- #7822 `0e6fd5e` Add listunspent() test for spendable/unspendable UTXO (jpdffonseca)
- #7912 `59ad568` Tests: Fix deserialization of reject messages (sdaftuar)
- #7941 `0ea3941` Fixing comment in script_test.json test case (Christewart)
- #7807 `0ad1041` Fixed miner test values, gave constants for less error-prone values (instagibbs)
- #7980 `88b77c7` Smartfees: Properly use ordered dict (MarcoFalke)
- #7814 `77b637f` Switch to py3 (MarcoFalke)
- #8030 `409a8a1` Revert fatal-ness of missing python-zmq (laanwj)
- #8018 `3e90fe6` Autofind rpc tests --srcdir (jonasschnelli)
- #7971 `4e14afe` Refactor test_framework and pull tester (MarcoFalke)
- #8016 `5767e80` Fix multithread CScheduler and reenable test (paveljanik)
- #7972 `423ca30` pull-tester: Run rpc test in parallel  (MarcoFalke)
- #8039 `69b3a6d` Bench: Add crypto hash benchmarks (laanwj)
- #8041 `5b736dd` Fix bip9-softforks blockstore issue (MarcoFalke)
- #7994 `1f01443` Add op csv tests to script_tests.json (Christewart)
- #8038 `e2bf830` Various minor fixes (MarcoFalke)
- #8072 `1b87e5b` Travis: 'make check' in parallel and verbose (MarcoFalke)
- #8056 `8844ef1` Remove hardcoded "4 nodes" from test_framework (MarcoFalke)
- #8047 `37f9a1f` Test_framework: Set wait-timeout for bitcoind procs (MarcoFalke)
- #8095 `6700cc9` Test framework: only cleanup on successful test runs (sdaftuar)
- #8098 `06bd4f6` Test_framework: Append portseed to tmpdir (MarcoFalke)
- #8104 `6ff2c8d` Add timeout to sync_blocks() and sync_mempools() (sdaftuar)
- #8111 `61b8684` Benchmark SipHash (sipa)
- #8107 `52b803e` Bench: Added base58 encoding/decoding benchmarks (yurizhykin)
- #8115 `0026e0e` Avoid integer division in the benchmark inner-most loop (gmaxwell)
- #8090 `a2df115` Adding P2SH(p2pkh) script test case (Christewart)
- #7992 `ec45cc5` Extend #7956 with one more test (TheBlueMatt)
- #8139 `ae5575b` Fix interrupted HTTP RPC connection workaround for Python 3.5+ (sipa)
- #8164 `0f24eaf` [Bitcoin-Tx] fix missing test fixtures, fix 32bit atoi issue (jonasschnelli)
- #8166 `0b5279f` Src/test: Do not shadow local variables (paveljanik)
- #8141 `44c1b1c` Continuing port of java comparison tool (mrbandrews)
- #8201 `36b7400` fundrawtransaction: Fix race, assert amounts (MarcoFalke)
- #8214 `ed2cd59` Mininode: fail on send_message instead of silent return (MarcoFalke)
- #8215 `a072d1a` Don't use floating point in wallet tests (MarcoFalke)
- #8066 `65c2058` Test_framework: Use different rpc_auth_pair for each node (MarcoFalke)
- #8216 `0d41d70` Assert 'changePosition out of bounds'  (MarcoFalke)
- #8222 `961893f` Enable mempool consistency checks in unit tests (sipa)
- #7751 `84370d5` test_framework: python3.4 authproxy compat (laanwj)
- #7744 `d8e862a` test_framework: detect failure of bitcoind startup (laanwj)
- #8280 `115735d` Increase sync_blocks() timeouts in pruning.py (MarcoFalke)
- #8340 `af9b7a9` Solve trivial merge conflict in p2p-segwit.py (MarcoFalke)
- #8067 `3e4cf8f` Travis: use slim generic image, and some fixups (theuni)
- #7951 `5c7df70` Test_framework: Properly print exception (MarcoFalke)
- #8070 `7771aa5` Remove non-determinism which is breaking net_tests #8069 (EthanHeilman)
- #8309 `bb2646a` Add wallet-hd test (MarcoFalke)

### Mining

- #7507 `11c7699` Remove internal miner (Leviathn)
- #7663 `c87f51e` Make the generate RPC call function for non-regtest (sipa)
- #7671 `e2ebd25` Add generatetoaddress RPC to mine to an address (achow101)
- #7935 `66ed450` Versionbits: GBT support (luke-jr)
- #7598 `e1486eb` Refactor CreateNewBlock to be a method of the BlockAssembler class (morcos)
- #7600 `66db2d6` Select transactions using feerate-with-ancestors (sdaftuar)
- #8295 `f5660d3` Mining-related fixups for 0.13.0 (sdaftuar)
- #7796 `536b75e` Add support for negative fee rates, fixes `prioritizetransaction` (MarcoFalke)

### Documentation and miscellaneous

- #7423 `69e2a40` Add example for building with constrained resources (jarret)
- #8254 `c2c69ed` Add OSX ZMQ requirement to QA readme (fanquake)
- #8203 `377d131` Clarify documentation for running a tor node (nathaniel-mahieu)
- #7428 `4b12266` Add example for listing ./configure flags (nathaniel-mahieu)
- #7847 `3eae681` Add arch linux build example (mruddy)
- #7968 `ff69aaf` Fedora build requirements (wtogami)
- #8013 `fbedc09` Fedora build requirements, add gcc-c++ and fix typo (wtogami)
- #8009 `fbd8478` Fixed invalid example paths in gitian-building.md (JeremyRand)
- #8240 `63fbdbc` Mention Windows XP end of support in release notes (laanwj)
- #8303 `5077d2c` Update bips.md for CSV softfork (fanquake)
- #7789 `e0b3e19` Add note about using the Qt official binary installer (paveljanik)
- #7791 `e30a5b0` Change Precise to Trusty in gitian-building.md (JeremyRand)
- #7838 `8bb5d3d` Update gitian build guide to debian 8.4.0 (fanquake)
- #7855 `b778e59` Replace precise with trusty (MarcoFalke)
- #7975 `fc23fee` Update bitcoin-core GitHub links (MarcoFalke)
- #8034 `e3a8207` Add basic git squash workflow (fanquake)
- #7813 `214ec0b` Update port in tor.md (MarcoFalke)
- #8193 `37c9830` Use Debian 8.5 in the gitian-build guide (fanquake)
- #8261 `3685e0c` Clarify help for `getblockchaininfo` (paveljanik)
- #7185 `ea0f5a2` Note that reviewers should mention the id of the commits they reviewed (pstratem)
- #7290 `c851d8d` [init] Add missing help for args (MarcoFalke)
- #7281 `f9fd4c2` Improve CheckInputs() comment about sig verification (petertodd)
- #7417 `1e06bab` Minor improvements to the release process (PRabahy)
- #7444 `4cdbd42` Improve block validity/ConnectBlock() comments (petertodd)
- #7527 `db2e1c0` Fix and cleanup listreceivedbyX documentation (instagibbs)
- #7541 `b6e00af` Clarify description of blockindex (pinheadmz)
- #7590 `f06af57` Improving wording related to Boost library requirements [updated] (jonathancross)
- #7635 `0fa88ef` Add dependency info to test docs (elliotolds)
- #7609 `3ba07bd` RPM spec file project (AliceWonderMiscreations)
- #7850 `229a17c` Removed call to `TryCreateDirectory` from `GetDefaultDataDir` in `src/util.cpp` (alexreg)
- #7888 `ec870e1` Prevector: fix 2 bugs in currently unreached code paths (kazcw)
- #7922 `90653bc` CBase58Data::SetString: cleanse the full vector (kazcw)
- #7881 `c4e8390` Update release process (laanwj)
- #7952 `a9c8b74` Log invalid block hash to make debugging easier (paveljanik)
- #7974 `8206835` More comments on the design of AttemptToEvictConnection (gmaxwell)
- #7795 `47a7cfb` UpdateTip: log only one line at most per block (laanwj)
- #8110 `e7e25ea` Add benchmarking notes (fanquake)
- #8121 `58f0c92` Update implemented BIPs list (fanquake)
- #8029 `58725ba` Simplify OS X build notes (fanquake)
- #8143 `d46b8b5` comment nit: miners don't vote (instagibbs)
- #8136 `22e0b35` Log/report in 10% steps during VerifyDB (jonasschnelli)
- #8168 `d366185` util: Add ParseUInt32 and ParseUInt64 (laanwj)
- #8178 `f7b1bfc` Add git and github tips and tricks to developer notes (sipa)
- #8177 `67db011` developer notes: updates for C++11 (kazcw)
- #8229 `8ccdac1` [Doc] Update OS X build notes for 10.11 SDK (fanquake)
- #8233 `9f1807a` Mention Linux ARM executables in release process and notes (laanwj)
- #7540 `ff46dd4` Rename OP_NOP3 to OP_CHECKSEQUENCEVERIFY (btcdrak)
- #8289 `26316ff` bash-completion: Adapt for 0.12 and 0.13 (roques)
- #7453 `3dc3149` Missing patches from 0.12 (MarcoFalke)
- #7113 `54a550b` Switch to a more efficient rolling Bloom filter (sipa)
- #7257 `de9e5ea` Combine common error strings for different options so translations can be shared and reused (luke-jr)
- #7304 `b8f485c` [contrib] Add clang-format-diff.py (MarcoFalke)
- #7378 `e6f97ef` devtools: replace github-merge with python version (laanwj)
- #7395 `0893705` devtools: show pull and commit information in github-merge (laanwj)
- #7402 `6a5932b` devtools: github-merge get toplevel dir without extra whitespace (achow101)
- #7425 `20a408c` devtools: Fix utf-8 support in messages for github-merge (laanwj)
- #7632 `409f843` Delete outdated test-patches reference (Lewuathe)
- #7662 `386f438` remove unused NOBLKS_VERSION_{START,END} constants (rat4)
- #7737 `aa0d2b2` devtools: make github-merge.py use py3 (laanwj)
- #7781 `55db5f0` devtools: Auto-set branch to merge to in github-merge (laanwj)
- #7934 `f17032f` Improve rolling bloom filter performance and benchmark (sipa)
- #8004 `2efe38b` signal handling: fReopenDebugLog and fRequestShutdown should be type sig_atomic_t (catilac)
- #7713 `f6598df` Fixes for verify-commits script (petertodd)

Credits
=======

Thanks to everyone who directly contributed to this release:

- 21E14
- accraze
- Adam Brown
- Alexander Regueiro
- Alex Morcos
- Alfie John
- Alice Wonder
- AlSzacrel
- Andrew Chow
- Andrés G. Aragoneses
- Bob McElrath
- BtcDrak
- calebogden
- Cédric Félizard
- Chirag Davé
- Chris Moore
- Chris Stewart
- Christian von Roques
- Chris Wheeler
- Cory Fields
- crowning-
- Daniel Cousens
- Daniel Kraft
- Denis Lukianov
- Elias Rohrer
- Elliot Olds
- Eric Shaw
- error10
- Ethan Heilman
- face
- fanquake
- Francesco 'makevoid' Canessa
- fsb4000
- Gavin Andresen
- gladoscc
- Gregory Maxwell
- Gregory Sanders
- instagibbs
- James O'Beirne
- Jarret Dyrbye
- Jeremy Rand
- jl2012
- jloughry
- jmacwhyte
- Joao Fonseca
- Johnson Lau
- Jonas Nick
- Jonas Schnelli
- Jonathan Cross
- João Barbosa
- Jorge Timón
- Kaz Wesley
- Kefkius
- kirkalx
- Krzysztof Jurewicz
- Leviathn
- lewuathe
- Luke Dashjr
- Luv Khemani
- Marcel Krüger
- Marco Falke
- Mark Friedenbach
- Matt
- Matt Bogosian
- Matt Corallo
- Matthew English
- Matthew Zipkin
- mb300sd
- Mitchell Cash
- mrbandrews
- mruddy
- Murch
- Mustafa
- Nathaniel Mahieu
- Nicolas Dorier
- Patrick Strateman
- Paul Rabahy
- paveljanik
- Pavel Janík
- Pavel Vasin
- Pedro Branco
- Peter Todd
- Philip Kaufmann
- Pieter Wuille
- Prayag Verma
- ptschip
- Puru
- randy-waterhouse
- R E Broadley
- Rusty Russell
- Suhas Daftuar
- Suriyaa Kudo
- TheLazieR Yip
- Thomas Kerin
- Tom Harding
- Tyler Hardin
- UdjinM6
- Warren Togami
- Will Binns
- Wladimir J. van der Laan
- Yuri Zhykin

As well as everyone that helped translating on [Transifex](https://www.transifex.com/projects/p/bitcoin/).