Merge bitcoin/bitcoin#26128: doc: add missing historical release notes

cb075d245e doc: add historical 0.21.2 release notes (fanquake)
699f3429c6 doc: add historical 0.20.2 release notes (fanquake)

Pull request description:

  0.20.2 and 0.21.2 are missing from master.

ACKs for top commit:
  jarolrod:
    ACK cb075d245e

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fanquake 2 years ago
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0.20.2 Release Notes
====================
Bitcoin Core version 0.20.2 is now available from:
<https://bitcoincore.org/bin/bitcoin-core-0.20.2/>
This minor release includes various bug fixes 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/>
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 in some cases), then run the
installer (on Windows) or just copy over `/Applications/Bitcoin-Qt` (on Mac)
or `bitcoind`/`bitcoin-qt` (on Linux).
Upgrading directly from a version of Bitcoin Core that has reached its EOL is
possible, but it might take some time if the data directory needs to be migrated. Old
wallet versions of Bitcoin Core are generally supported.
Compatibility
==============
Bitcoin Core is supported and extensively tested on operating systems
using the Linux kernel, macOS 10.12+, and Windows 7 and newer. Bitcoin
Core should also work on most other Unix-like systems but is not as
frequently tested on them. It is not recommended to use Bitcoin Core on
unsupported systems.
From Bitcoin Core 0.20.0 onwards, macOS versions earlier than 10.12 are no
longer supported. Additionally, Bitcoin Core does not yet change appearance
when macOS "dark mode" is activated.
Known Bugs
==========
The process for generating the source code release ("tarball") has changed in an
effort to make it more complete, however, there are a few regressions in
this release:
- The generated `configure` script is currently missing, and you will need to
install autotools and run `./autogen.sh` before you can run
`./configure`. This is the same as when checking out from git.
- Instead of running `make` simply, you should instead run
`BITCOIN_GENBUILD_NO_GIT=1 make`.
Notable changes
===============
Changes regarding misbehaving peers
-----------------------------------
Peers that misbehave (e.g. send us invalid blocks) are now referred to as
discouraged nodes in log output, as they're not (and weren't) strictly banned:
incoming connections are still allowed from them, but they're preferred for
eviction.
Furthermore, a few additional changes are introduced to how discouraged
addresses are treated:
- Discouraging an address does not time out automatically after 24 hours
(or the `-bantime` setting). Depending on traffic from other peers,
discouragement may time out at an indeterminate time.
- Discouragement is not persisted over restarts.
- There is no method to list discouraged addresses. They are not returned by
the `listbanned` RPC. That RPC also no longer reports the `ban_reason`
field, as `"manually added"` is the only remaining option.
- Discouragement cannot be removed with the `setban remove` RPC command.
If you need to remove a discouragement, you can remove all discouragements by
stop-starting your node.
Notification changes
--------------------
`-walletnotify` notifications are now sent for wallet transactions that are
removed from the mempool because they conflict with a new block. These
notifications were sent previously before the v0.19 release, but had been
broken since that release (bug
[#18325](https://github.com/bitcoin/bitcoin/issues/18325)).
PSBT changes
------------
PSBTs will contain both the non-witness utxo and the witness utxo for segwit
inputs in order to restore compatibility with wallet software that are now
requiring the full previous transaction for segwit inputs. The witness utxo
is still provided to maintain compatibility with software which relied on its
existence to determine whether an input was segwit.
0.20.2 change log
=================
### P2P protocol and network code
- #19620 Add txids with non-standard inputs to reject filter (sdaftuar)
- #20146 Send post-verack handshake messages at most once (MarcoFalke)
### Wallet
- #19740 Simplify and fix CWallet::SignTransaction (achow101)
### RPC and other APIs
- #19836 Properly deserialize txs with witness before signing (MarcoFalke)
- #20731 Add missing description of vout in getrawtransaction help text (benthecarman)
### Build system
- #20142 build: set minimum required Boost to 1.48.0 (fanquake)
- #20298 use the new plistlib API (jonasschnelli)
- #20880 gitian: Use custom MacOS code signing tool (achow101)
- #22190 Use latest signapple commit (achow101)
### Tests and QA
- #19839 Set appveyor vm version to previous Visual Studio 2019 release. (sipsorcery)
- #19842 Update the vcpkg checkout commit ID in appveyor config. (sipsorcery)
- #20562 Test that a fully signed tx given to signrawtx is unchanged (achow101)
### Miscellaneous
- #19192 Extract net permissions doc (MarcoFalke)
- #19777 Correct description for getblockstats's txs field (shesek)
- #20080 Strip any trailing / in -datadir and -blocksdir paths (hebasto)
- #20082 fixes read buffer to use min rather than max (EthanHeilman)
- #20141 Avoid the use of abs64 in timedata (sipa)
- #20756 Add missing field (permissions) to the getpeerinfo help (amitiuttarwar)
- #20861 BIP 350: Implement Bech32m and use it for v1+ segwit addresses (sipa)
- #22124 Update translations after closing 0.20.x on Transifex (hebasto)
- #21471 fix bech32_encode calls in gen_key_io_test_vectors.py (sipa)
- #22837 mention bech32m/BIP350 in doc/descriptors.md (sipa)
Credits
=======
Thanks to everyone who directly contributed to this release:
- Aaron Clauson
- Amiti Uttarwar
- Andrew Chow
- Ethan Heilman
- fanquake
- Hennadii Stepanov
- Jonas Schnelli
- MarcoFalke
- Nadav Ivgi
- Pieter Wuille
- Suhas Daftuar
As well as to everyone that helped with translations on
[Transifex](https://www.transifex.com/bitcoin/bitcoin/).

@ -0,0 +1,109 @@
0.21.2 Release Notes
====================
Bitcoin Core version 0.21.2 is now available from:
<https://bitcoincore.org/bin/bitcoin-core-0.21.2/>
This minor release includes various bug fixes 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/>
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 in some cases), then run the
installer (on Windows) or just copy over `/Applications/Bitcoin-Qt` (on Mac)
or `bitcoind`/`bitcoin-qt` (on Linux).
Upgrading directly from a version of Bitcoin Core that has reached its EOL is
possible, but it might take some time if the data directory needs to be migrated. Old
wallet versions of Bitcoin Core are generally supported.
Compatibility
==============
Bitcoin Core is supported and extensively tested on operating systems
using the Linux kernel, macOS 10.12+, and Windows 7 and newer. Bitcoin
Core should also work on most other Unix-like systems but is not as
frequently tested on them. It is not recommended to use Bitcoin Core on
unsupported systems.
From Bitcoin Core 0.20.0 onwards, macOS versions earlier than 10.12 are no
longer supported. Additionally, Bitcoin Core does not yet change appearance
when macOS "dark mode" is activated.
0.21.2 change log
=================
### P2P protocol and network code
- #21644 use NetPermissions::HasFlag() in CConnman::Bind() (jonatack)
- #22569 Rate limit the processing of rumoured addresses (sipa)
### Wallet
- #21907 Do not iterate a directory if having an error while accessing it (hebasto)
### RPC
- #19361 Reset scantxoutset progress before inferring descriptors (prusnak)
### Build System
- #21932 depends: update Qt 5.9 source url (kittywhiskers)
- #22017 Update Windows code signing certificate (achow101)
- #22191 Use custom MacOS code signing tool (achow101)
- #22713 Fix build with Boost 1.77.0 (sizeofvoid)
### Tests and QA
- #20182 Build with --enable-werror by default, and document exceptions (hebasto)
- #20535 Fix intermittent feature_taproot issue (MarcoFalke)
- #21663 Fix macOS brew install command (hebasto)
- #22279 add missing ECCVerifyHandle to base_encode_decode (apoelstra)
- #22730 Run fuzzer task for the master branch only (hebasto)
### GUI
- #277 Do not use QClipboard::Selection on Windows and macOS. (hebasto)
- #280 Remove user input from URI error message (prayank23)
- #365 Draw "eye" sign at the beginning of watch-only addresses (hebasto)
### Miscellaneous
- #22002 Fix crash when parsing command line with -noincludeconf=0 (MarcoFalke)
- #22137 util: Properly handle -noincludeconf on command line (take 2) (MarcoFalke)
Credits
=======
Thanks to everyone who directly contributed to this release:
- Andrew Chow
- Andrew Poelstra
- fanquake
- Hennadii Stepanov
- Jon Atack
- Kittywhiskers Van Gogh
- Luke Dashjr
- MarcoFalke
- Pavol Rusnak
- Pieter Wuille
- prayank23
- Rafael Sadowski
- W. J. van der Laan
As well as to everyone that helped with translations on
[Transifex](https://www.transifex.com/bitcoin/bitcoin/).
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