doc: archive release notes for v28.3

Author: fanquake

doc/release-notes/release-notes-28.3.md

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+Bitcoin Core version 28.3 is now available from:
+
+  <https://bitcoincore.org/bin/bitcoin-core-28.3/>
+
+This 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 macOS)
+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 3.17+, macOS 11.0+, 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.
+
+Notable changes
+===============
+
+### Mempool & Policy
+
+ The minimum block feerate (`-blockmintxfee`) has been changed to 1 satoshi per kvB. It can still be changed using the
+configuration option.
+
+- The default minimum relay feerate (`-minrelaytxfee`) and incremental relay feerate (`-incrementalrelayfee`) have been
+changed to 100 satoshis per kvB. They can still be changed using their respective configuration options, but it is
+recommended to change both together if you decide to do so.
+  - Other minimum feerates (e.g. the dust feerate, the minimum returned by the fee estimator, and all feerates used by
+  the wallet) remain unchanged. The mempool minimum feerate still changes in response to high volume.
+  - Note that unless these lower defaults are widely adopted across the network, transactions created with lower fee
+  rates are not guaranteed to propagate or confirm. The wallet feerates remain unchanged; `-mintxfee` must be changed
+  before attempting to create transactions with lower feerates using the wallet.
+
+- #33106 policy: lower the default blockmintxfee, incrementalrelayfee, minrelaytxfee
+- #33504 mempool: Do not enforce TRUC checks on reorg
+
+### P2P
+
+- #33395 net: do not apply whitelist permissions to onion inbounds
+
+### Test
+
+- #32765 test: Fix list index out of range error in feature_bip68_sequence.py
+- #33001 test: Do not pass tests on unhandled exceptions
+- #30125 test: improve BDB parser (handle internal/overflow pages, support all page sizes)
+- #30948 test: Add missing sync_mempools() to fill_mempool()
+- #30784 test: add BulkTransaction helper to unit test transaction utils
+
+### Build
+
+- #32678 guix: warn and abort when SOURCE_DATE_EPOCH is set
+- #32943 depends: Force CMAKE_EXPORT_NO_PACKAGE_REGISTRY=TRUE
+- #33073 guix: warn SOURCE_DATE_EPOCH set in guix-codesign
+- #33563 build: fix depends Qt download link
+
+### Doc
+
+- #32776 doc: taproot became always active in v24.0
+- #32777 doc: fix Transifex 404s
+- #33070 doc/zmq: fix unix socket path example
+- #33133 rpc: fix getpeerinfo ping duration unit docs
+- #33236 doc: Remove wrong and redundant doxygen tag
+
+### Misc
+
+- #33340 Fix benchmark CSV output
+- #33482 contrib: fix macOS deployment with no translations
+- #33581 ci: Properly include $FILE_ENV in DEPENDS_HASH
+
+Credits
+=======
+
+Thanks to everyone who directly contributed to this release:
+- 0xB10C
+- amisha
+- Ava Chow
+- fanquake
+- glozow
+- Hennadii Stepanov
+- MarcoFalke
+- Martin Zumsande
+- romanz
+- Sjors Provoost
+- theStack
+- Vasil Dimov
+- willcl-ark
+- zaidmstrr
+
+As well as to everyone that helped with translations on
+[Transifex](https://explore.transifex.com/bitcoin/bitcoin/).