doc: Add historical release notes for 0.16.2

Tree-SHA512: 39601090cbfbc51b00426696c118758953d3eb5e0323e9105a5aabb63ab22eb1b3edbabb541bb7a24869c53624dee3c220fd2c1f3fbe627f8d9d168a23064393

Author: laanwj

doc/release-notes/release-notes-0.16.2.md

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+Bitcoin Core version 0.16.2 is now available from:
+
+  <https://bitcoincore.org/bin/bitcoin-core-0.16.2/>
+
+This is a new minor version release, with various bugfixes
+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/>
+
+How to Upgrade
+==============
+
+If you are running an older version, shut it down. Wait until it has completely
+shut down (which might take a few minutes for older versions), then run the
+installer (on Windows) or just copy over `/Applications/Bitcoin-Qt` (on Mac)
+or `bitcoind`/`bitcoin-qt` (on Linux).
+
+The first time you run version 0.15.0 or newer, your chainstate database will be converted to a
+new format, which will take anywhere from a few minutes to half an hour,
+depending on the speed of your machine.
+
+Note that the block database format also changed in version 0.8.0 and there is no
+automatic upgrade code from before version 0.8 to version 0.15.0 or higher. Upgrading
+directly from 0.7.x and earlier without re-downloading the blockchain is not supported.
+However, as usual, old wallet versions are still supported.
+
+Downgrading warning
+-------------------
+
+Wallets created in 0.16 and later are not compatible with versions prior to 0.16
+and will not work if you try to use newly created wallets in older versions. Existing
+wallets that were created with older versions are not affected by this.
+
+Compatibility
+==============
+
+Bitcoin Core is extensively tested on multiple operating systems using
+the Linux kernel, macOS 10.8+, and Windows Vista and later. Windows XP is not supported.
+
+Bitcoin Core should also work on most other Unix-like systems but is not
+frequently tested on them.
+
+0.16.2 change log
+------------------
+
+### Wallet
+- #13622 `c04a4a5` Remove mapRequest tracking that just effects Qt display. (TheBlueMatt)
+- #12905 `cfc6f74` [rpcwallet] Clamp walletpassphrase value at 100M seconds (sdaftuar)
+- #13437 `ed82e71` wallet: Erase wtxOrderd wtx pointer on removeprunedfunds (MarcoFalke)
+
+### RPC and other APIs
+- #13451 `cbd2f70` rpc: expose CBlockIndex::nTx in getblock(header) (instagibbs)
+- #13507 `f7401c8` RPC: Fix parameter count check for importpubkey (kristapsk)
+- #13452 `6b9dc8c` rpc: have verifytxoutproof check the number of txns in proof structure (instagibbs)
+- #12837 `bf1f150` rpc: fix type mistmatch in `listreceivedbyaddress` (joemphilips)
+- #12743 `657dfc5` Fix csBestBlock/cvBlockChange waiting in rpc/mining (sipa)
+
+### GUI
+- #12432 `f78e7f6` [qt] send: Clear All also resets coin control options (Sjors)
+- #12617 `21dd512` gui: Show messages as text not html (laanwj)
+- #12793 `cf6feb7` qt: Avoid reseting on resetguisettigs=0 (MarcoFalke)
+
+### Build system
+- #13544 `9fd3e00` depends: Update Qt download url (fanquake)
+- #12573 `88d1a64` Fix compilation when compiler do not support `__builtin_clz*` (532479301)
+
+### Tests and QA
+- #13061 `170b309` Make tests pass after 2020 (bmwiedemann)
+- #13192 `79c4fff` [tests] Fixed intermittent failure in `p2p_sendheaders.py` (lmanners)
+- #13300 `d9c5630` qa: Initialize lockstack to prevent null pointer deref (MarcoFalke)
+- #13545 `e15e3a9` tests: Fix test case `streams_serializedata_xor` Remove Boost dependency. (practicalswift)
+- #13304 `cbdabef` qa: Fix `wallet_listreceivedby` race (MarcoFalke)
+
+### Miscellaneous
+- #12887 `2291774` Add newlines to end of log messages (jnewbery)
+- #12859 `18b0c69` Bugfix: Include <memory> for `std::unique_ptr` (luke-jr)
+- #13131 `ce8aa54` Add Windows shutdown handler (ken2812221)
+- #13652 `20461fc` rpc: Fix that CWallet::AbandonTransaction would leave the grandchildren, etc. active (Empact)
+
+Credits
+=======
+
+Thanks to everyone who directly contributed to this release:
+
+- 532479301
+- Ben Woosley
+- Bernhard M. Wiedemann
+- Chun Kuan Lee
+- Cory Fields
+- fanquake
+- Gregory Sanders
+- joemphilips
+- John Newbery
+- Kristaps Kaupe
+- lmanners
+- Luke Dashjr
+- MarcoFalke
+- Matt Corallo
+- Pieter Wuille
+- practicalswift
+- Sjors Provoost
+- Suhas Daftuar
+- Wladimir J. van der Laan
+
+And to those that reported security issues:
+
+- Braydon Fuller
+- Himanshu Mehta
+
+As well as everyone that helped translating on [Transifex](https://www.transifex.com/projects/p/bitcoin/).