doc: Add historical release notes for 0.15.1
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doc/release-notes/release-notes-0.15.1.md
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doc/release-notes/release-notes-0.15.1.md
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Bitcoin Core version *0.15.1* is now available from:
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<https://bitcoincore.org/bin/bitcoin-core-0.15.1/>
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or
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<https://bitcoin.org/bin/bitcoin-core-0.15.1/>
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This is a new minor version release, including various bugfixes and
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performance improvements, as well as updated translations.
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Please report bugs using the issue tracker at GitHub:
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<https://github.com/bitcoin/bitcoin/issues>
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To receive security and update notifications, please subscribe to:
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<https://bitcoincore.org/en/list/announcements/join/>
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How to Upgrade
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==============
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If you are running an older version, shut it down. Wait until it has completely
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shut down (which might take a few minutes for older versions), then run the
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installer (on Windows) or just copy over `/Applications/Bitcoin-Qt` (on Mac)
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or `bitcoind`/`bitcoin-qt` (on Linux).
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The first time you run version 0.15.0 or higher, your chainstate database will
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be converted to a new format, which will take anywhere from a few minutes to
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half an hour, depending on the speed of your machine.
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The file format of `fee_estimates.dat` changed in version 0.15.0. Hence, a
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downgrade from version 0.15 or upgrade to version 0.15 will cause all fee
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estimates to be discarded.
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Note that the block database format also changed in version 0.8.0 and there is no
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automatic upgrade code from before version 0.8 to version 0.15.0. Upgrading
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directly from 0.7.x and earlier without redownloading the blockchain is not supported.
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However, as usual, old wallet versions are still supported.
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Downgrading warning
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-------------------
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The chainstate database for this release is not compatible with previous
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releases, so if you run 0.15 and then decide to switch back to any
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older version, you will need to run the old release with the `-reindex-chainstate`
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option to rebuild the chainstate data structures in the old format.
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If your node has pruning enabled, this will entail re-downloading and
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processing the entire blockchain.
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Compatibility
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==============
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Bitcoin Core is extensively tested on multiple operating systems using
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the Linux kernel, macOS 10.8+, and Windows Vista and later. Windows XP is not supported.
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Bitcoin Core should also work on most other Unix-like systems but is not
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frequently tested on them.
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Notable changes
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===============
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Network fork safety enhancements
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--------------------------------
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A number of changes to the way Bitcoin Core deals with peer connections and invalid blocks
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have been made, as a safety precaution against blockchain forks and misbehaving peers.
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- Unrequested blocks with less work than the minimum-chain-work are now no longer processed even
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if they have more work than the tip (a potential issue during IBD where the tip may have low-work).
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This prevents peers wasting the resources of a node.
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- Peers which provide a chain with less work than the minimum-chain-work during IBD will now be disconnected.
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- For a given outbound peer, we now check whether their best known block has at least as much work as our tip. If it
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doesn't, and if we still haven't heard about a block with sufficient work after a 20 minute timeout, then we send
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a single getheaders message, and wait 2 more minutes. If after two minutes their best known block has insufficient
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work, we disconnect that peer. We protect 4 of our outbound peers from being disconnected by this logic to prevent
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excessive network topology changes as a result of this algorithm, while still ensuring that we have a reasonable
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number of nodes not known to be on bogus chains.
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- Outbound (non-manual) peers that serve us block headers that are already known to be invalid (other than compact
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block announcements, because BIP 152 explicitly permits nodes to relay compact blocks before fully validating them)
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will now be disconnected.
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- If the chain tip has not been advanced for over 30 minutes, we now assume the tip may be stale and will try to connect
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to an additional outbound peer. A periodic check ensures that if this extra peer connection is in use, we will disconnect
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the peer that least recently announced a new block.
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- The set of all known invalid-themselves blocks (i.e. blocks which we attempted to connect but which were found to be
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invalid) are now tracked and used to check if new headers build on an invalid chain. This ensures that everything that
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descends from an invalid block is marked as such.
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Miner block size limiting deprecated
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------------------------------------
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Though blockmaxweight has been preferred for limiting the size of blocks returned by
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getblocktemplate since 0.13.0, blockmaxsize remained as an option for those who wished
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to limit their block size directly. Using this option resulted in a few UI issues as
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well as non-optimal fee selection and ever-so-slightly worse performance, and has thus
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now been deprecated. Further, the blockmaxsize option is now used only to calculate an
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implied blockmaxweight, instead of limiting block size directly. Any miners who wish
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to limit their blocks by size, instead of by weight, will have to do so manually by
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removing transactions from their block template directly.
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GUI settings backed up on reset
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-------------------------------
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The GUI settings will now be written to `guisettings.ini.bak` in the data directory before wiping them when
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the `-resetguisettings` argument is used. This can be used to retroactively troubleshoot issues due to the
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GUI settings.
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Duplicate wallets disallowed
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----------------------------
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Previously, it was possible to open the same wallet twice by manually copying the wallet file, causing
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issues when both were opened simultaneously. It is no longer possible to open copies of the same wallet.
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Debug `-minimumchainwork` argument added
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----------------------------------------
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A hidden debug argument `-minimumchainwork` has been added to allow a custom minimum work value to be used
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when validating a chain.
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Low-level RPC changes
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----------------------
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- The "currentblocksize" value in getmininginfo has been removed.
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- `dumpwallet` no longer allows overwriting files. This is a security measure
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as well as prevents dangerous user mistakes.
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- `backupwallet` will now fail when attempting to backup to source file, rather than
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destroying the wallet.
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- `listsinceblock` will now throw an error if an unknown `blockhash` argument
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value is passed, instead of returning a list of all wallet transactions since
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the genesis block. The behaviour is unchanged when an empty string is provided.
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0.15.1 Change log
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=================
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### Mining
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- #11100 `7871a7d` Fix confusing blockmax{size,weight} options, dont default to throwing away money (TheBlueMatt)
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### RPC and other APIs
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- #10859 `2a5d099` gettxout: Slightly improve doc and tests (jtimon)
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- #11267 `b1a6c94` update cli for estimate\*fee argument rename (laanwj)
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- #11483 `20cdc2b` Fix importmulti bug when importing an already imported key (pedrobranco)
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- #9937 `a43be5b` Prevent `dumpwallet` from overwriting files (laanwj)
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- #11465 `405e069` Update named args documentation for importprivkey (dusty-wil)
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- #11131 `b278a43` Write authcookie atomically (laanwj)
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- #11565 `7d4546f` Make listsinceblock refuse unknown block hash (ryanofsky)
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- #11593 `8195cb0` Work-around an upstream libevent bug (theuni)
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### P2P protocol and network code
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- #11397 `27e861a` Improve and document SOCKS code (laanwj)
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- #11252 `0fe2a9a` When clearing addrman clear mapInfo and mapAddr (instagibbs)
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- #11527 `a2bd86a` Remove my testnet DNS seed (schildbach)
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- #10756 `0a5477c` net processing: swap out signals for an interface class (theuni)
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- #11531 `55b7abf` Check that new headers are not a descendant of an invalid block (more effeciently) (TheBlueMatt)
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- #11560 `49bf090` Connect to a new outbound peer if our tip is stale (sdaftuar)
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- #11568 `fc966bb` Disconnect outbound peers on invalid chains (sdaftuar)
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- #11578 `ec8dedf` Add missing lock in ProcessHeadersMessage(...) (practicalswift)
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- #11456 `6f27965` Replace relevant services logic with a function suite (TheBlueMatt)
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- #11490 `bf191a7` Disconnect from outbound peers with bad headers chains (sdaftuar)
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### Validation
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- #10357 `da4908c` Allow setting nMinimumChainWork on command line (sdaftuar)
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- #11458 `2df65ee` Don't process unrequested, low-work blocks (sdaftuar)
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### Build system
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- #11440 `b6c0209` Fix validationinterface build on super old boost/clang (TheBlueMatt)
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- #11530 `265bb21` Add share/rpcuser to dist. source code archive (MarcoFalke)
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### GUI
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- #11334 `19d63e8` Remove custom fee radio group and remove nCustomFeeRadio setting (achow101)
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- #11198 `7310f1f` Fix display of package name on 'open config file' tooltip (esotericnonsense)
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- #11015 `6642558` Add delay before filtering transactions (lclc)
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- #11338 `6a62c74` Backup former GUI settings on `-resetguisettings` (laanwj)
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- #11335 `8d13b42` Replace save|restoreWindowGeometry with Qt functions (MeshCollider)
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- #11237 `2e31b1d` Fixing division by zero in time remaining (MeshCollider)
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- #11247 `47c02a8` Use IsMine to validate custom change address (MarcoFalke)
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### Wallet
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- #11017 `9e8aae3` Close DB on error (kallewoof)
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- #11225 `6b4d9f2` Update stored witness in AddToWallet (sdaftuar)
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- #11126 `2cb720a` Acquire cs_main lock before cs_wallet during wallet initialization (ryanofsky)
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- #11476 `9c8006d` Avoid opening copied wallet databases simultaneously (ryanofsky)
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- #11492 `de7053f` Fix leak in CDB constructor (promag)
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- #11376 `fd79ed6` Ensure backupwallet fails when attempting to backup to source file (tomasvdw)
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- #11326 `d570aa4` Fix crash on shutdown with invalid wallet (MeshCollider)
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### Tests and QA
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- #11399 `a825d4a` Fix bip68-sequence rpc test (jl2012)
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- #11150 `847c75e` Add getmininginfo test (mess110)
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- #11407 `806c78f` add functional test for mempoolreplacement command line arg (instagibbs)
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- #11433 `e169349` Restore bitcoin-util-test py2 compatibility (MarcoFalke)
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- #11308 `2e1ac70` zapwallettxes: Wait up to 3s for mempool reload (MarcoFalke)
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- #10798 `716066d` test bitcoin-cli (jnewbery)
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- #11443 `019c492` Allow "make cov" out-of-tree; Fix rpc mapping check (MarcoFalke)
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- #11445 `51bad91` 0.15.1 Backports (MarcoFalke)
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- #11319 `2f0b30a` Fix error introduced into p2p-segwit.py, and prevent future similar errors (sdaftuar)
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- #10552 `e4605d9` Tests for zmqpubrawtx and zmqpubrawblock (achow101)
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- #11067 `eeb24a3` TestNode: Add wait_until_stopped helper method (MarcoFalke)
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- #11068 `5398f20` Move wait_until to util (MarcoFalke)
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- #11125 `812c870` Add bitcoin-cli -stdin and -stdinrpcpass functional tests (promag)
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- #11077 `1d80d1e` fix timeout issues from TestNode (jnewbery)
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- #11078 `f1ced0d` Make p2p-leaktests.py more robust (jnewbery)
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- #11210 `f3f7891` Stop test_bitcoin-qt touching ~/.bitcoin (MeshCollider)
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- #11234 `f0b6795` Remove redundant testutil.cpp|h files (MeshCollider)
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- #11215 `cef0319` fixups from set_test_params() (jnewbery)
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- #11345 `f9cf7b5` Check connectivity before sending in assumevalid.py (jnewbery)
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- #11091 `c276c1e` Increase initial RPC timeout to 60 seconds (laanwj)
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- #10711 `fc2aa09` Introduce TestNode (jnewbery)
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- #11230 `d8dd8e7` Fixup dbcrash interaction with add_nodes() (jnewbery)
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- #11241 `4424176` Improve signmessages functional test (mess110)
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- #11116 `2c4ff35` Unit tests for script/standard and IsMine functions (jimpo)
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- #11422 `a36f332` Verify DBWrapper iterators are taking snapshots (TheBlueMatt)
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- #11121 `bb5e7cb` TestNode tidyups (jnewbery)
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- #11521 `ca0f3f7` travis: move back to the minimal image (theuni)
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- #11538 `adbc9d1` Fix race condition failures in replace-by-fee.py, sendheaders.py (sdaftuar)
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- #11472 `4108879` Make tmpdir option an absolute path, misc cleanup (MarcoFalke)
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- #10853 `5b728c8` Fix RPC failure testing (again) (jnewbery)
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- #11310 `b6468d3` Test listwallets RPC (mess110)
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### Miscellaneous
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- #11377 `75997c3` Disallow uncompressed pubkeys in bitcoin-tx [multisig] output adds (TheBlueMatt)
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- #11437 `dea3b87` [Docs] Update Windows build instructions for using WSL and Ubuntu 17.04 (fanquake)
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- #11318 `8b61aee` Put back inadvertently removed copyright notices (gmaxwell)
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- #11442 `cf18f42` [Docs] Update OpenBSD Build Instructions for OpenBSD 6.2 (fanquake)
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- #10957 `50bd3f6` Avoid returning a BIP9Stats object with uninitialized values (practicalswift)
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- #11539 `01223a0` [verify-commits] Allow revoked keys to expire (TheBlueMatt)
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Credits
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=======
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Thanks to everyone who directly contributed to this release:
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- Andreas Schildbach
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- Andrew Chow
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- Chris Moore
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- Cory Fields
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- Cristian Mircea Messel
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- Daniel Edgecumbe
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- Donal OConnor
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- Dusty Williams
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- fanquake
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- Gregory Sanders
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- Jim Posen
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- John Newbery
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- Johnson Lau
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- João Barbosa
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- Jorge Timón
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- Karl-Johan Alm
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- Lucas Betschart
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- MarcoFalke
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- Matt Corallo
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- Paul Berg
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- Pedro Branco
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- Pieter Wuille
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- practicalswift
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- Russell Yanofsky
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- Samuel Dobson
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- Suhas Daftuar
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- Tomas van der Wansem
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- Wladimir J. van der Laan
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As well as everyone that helped translating on [Transifex](https://www.transifex.com/projects/p/bitcoin/).
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