Merge pull request #11046 from ziggie1984/add-0.20.2-0.20.3-notes-to-master

docs: add 0.20.2 and 0.20.3 release notes to master

Author: ziggie1984

docs/release-notes/release-notes-0.20.2.md

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+# Release Notes
+- [Bug Fixes](#bug-fixes)
+- [New Features](#new-features)
+    - [Functional Enhancements](#functional-enhancements)
+    - [RPC Additions](#rpc-additions)
+    - [lncli Additions](#lncli-additions)
+- [Improvements](#improvements)
+    - [Functional Updates](#functional-updates)
+    - [RPC Updates](#rpc-updates)
+    - [lncli Updates](#lncli-updates)
+    - [Breaking Changes](#breaking-changes)
+    - [Performance Improvements](#performance-improvements)
+    - [Deprecations](#deprecations)
+- [Technical and Architectural Updates](#technical-and-architectural-updates)
+    - [BOLT Spec Updates](#bolt-spec-updates)
+    - [Testing](#testing)
+    - [Database](#database)
+    - [Code Health](#code-health)
+    - [Tooling and Documentation](#tooling-and-documentation)
+- [Contributors (Alphabetical Order)](#contributors)
+
+# Bug Fixes
+
+* [Fixed a panic](https://github.com/lightningnetwork/lnd/pull/10914) in the
+  DNS fallback SRV lookup, which unconditionally type-asserted each DNS Answer
+  record to `*dns.SRV` and crashed the daemon when the response contained a
+  non-SRV record. Non-SRV records are now skipped, and an empty `LookupHost`
+  result for the shim no longer triggers an out-of-bounds index.
+
+- [Fixed on-chain forward interceptor
+  settlement](https://github.com/lightningnetwork/lnd/pull/10895) after the
+  incoming channel force closes. Held forwards are now tracked as off-chain or
+  on-chain entries, allowing an on-chain re-offer to replace the old off-chain
+  hold so settlement reaches the witness beacon. Go callers of the exported
+  `htlcswitch.InterceptedPacket` type should use the new `Deadline` field to
+  distinguish off-chain auto-fail heights from on-chain settlement deadlines,
+  or `AutoFailHeight()` if they only need the legacy flattened value.
+
+# New Features
+
+## Functional Enhancements
+
+## RPC Additions
+
+## lncli Additions
+
+# Improvements
+## Functional Updates
+
+* lnd now [validates the CLTV expiry of HTLCs at the final
+  hop](https://github.com/lightningnetwork/lnd/pull/10927). A final HTLC whose
+  CLTV expiry falls outside the node's receive policy is failed back, bringing
+  the final hop in line with the CLTV delta limits already enforced on the
+  forwarding path.
+  As part of this change, the channel policy `TimeLockDelta` is now validated
+  against LND's supported forwarding bounds: any node that previously set a
+  per-channel `TimeLockDelta` greater than `2016` (the maximum default value)
+  will now have its `UpdateChannelPolicy` request rejected, and must lower the
+  value accordingly below the specified maximum.
+
+## RPC Updates
+
+## lncli Updates
+
+## Breaking Changes
+
+## Performance Improvements
+
+## Deprecations
+
+# Technical and Architectural Updates
+## BOLT Spec Updates
+
+## Testing
+
+## Database
+
+## Code Health
+
+## Tooling and Documentation
+
+# Contributors (Alphabetical Order)
+
+* Erick Cestari
+* Ziggie

docs/release-notes/release-notes-0.20.3.md

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+# Release Notes
+- [Bug Fixes](#bug-fixes)
+- [New Features](#new-features)
+    - [Functional Enhancements](#functional-enhancements)
+    - [RPC Additions](#rpc-additions)
+    - [lncli Additions](#lncli-additions)
+- [Improvements](#improvements)
+    - [Functional Updates](#functional-updates)
+    - [RPC Updates](#rpc-updates)
+    - [lncli Updates](#lncli-updates)
+    - [Breaking Changes](#breaking-changes)
+    - [Performance Improvements](#performance-improvements)
+    - [Deprecations](#deprecations)
+- [Technical and Architectural Updates](#technical-and-architectural-updates)
+    - [BOLT Spec Updates](#bolt-spec-updates)
+    - [Testing](#testing)
+    - [Database](#database)
+    - [Code Health](#code-health)
+    - [Tooling and Documentation](#tooling-and-documentation)
+- [Contributors (Alphabetical Order)](#contributors-alphabetical-order)
+
+# Bug Fixes
+
+* [Bounded the memory used while syncing the channel
+  graph](https://github.com/lightningnetwork/lnd/pull/10992). A peer replying
+  to our `query_channel_range` could previously make us buffer an
+  unpredictable number of short channel IDs, as the only limit was a coarse
+  67MB cap on the bytes a single zlib-compressed reply could decompress to.
+  Replies are now capped at a precise number of short channel IDs, both
+  per-message and in aggregate across a single query, and the accumulated
+  reply state is released as soon as any reply fails validation so that a
+  peer cannot pin it by deliberately forcing an error.
+
+* [Refined invoice update
+  handling](https://github.com/lightningnetwork/lnd/pull/11024) across MPP, AMP,
+  and legacy payment paths, including keysend records and preimage-dependent
+  settlement outcomes.
+
+* [Fixed a data race](https://github.com/lightningnetwork/lnd/pull/11019) in the
+  legacy cooperative close state machine, which was advanced from both the link
+  goroutine and the peer goroutine with nothing synchronizing the two. The link
+  now reports a flushed channel to the peer's channel manager instead of driving
+  the closer itself, so every step of a close runs on a single goroutine. The
+  same change has the RBF closer validate the remote party's delivery script in
+  all cases, rather than only when an upfront shutdown script was on record for
+  that peer, and rejects an absent script instead of treating it as nothing to
+  check.
+
+* Outgoing contest resolvers now [retain the corresponding incoming HTLC
+  expiry](https://github.com/lightningnetwork/lnd/pull/11032) when transitioning
+  to timeout resolution, allowing the sweeper to continue using an
+  expiry-aware confirmation target.
+
+# New Features
+
+## Functional Enhancements
+
+## RPC Additions
+
+* The [HTLC interceptor](https://github.com/lightningnetwork/lnd/pull/10942) now
+  exposes the next hop of a blinded route that identifies it by node ID
+  (`next_node_id`) rather than by channel.
+
+## lncli Additions
+
+# Improvements
+
+## Functional Updates
+
+* [The HTLC forward interceptor now validates](https://github.com/lightningnetwork/lnd/pull/11028)
+  that derived auto-fail heights are within the supported range before they are
+  exposed through the interceptor API.
+
+## RPC Updates
+
+* `ForwardHtlcInterceptRequest.outgoing_requested_chan_id` now holds a reserved
+  sentinel value (`18446744073709551615`, all bits set) when the
+  [HTLC interceptor](https://github.com/lightningnetwork/lnd/pull/10942) reports
+  a blinded forward that identifies the next hop by node ID. The sender of such
+  a forward requests no channel, so a zero value here would make a client that
+  detects the exit hop by a zero channel ID classify the forward as a final
+  receive. Clients that switch on this field must handle the sentinel and read
+  `outgoing_requested_node_id` for the next hop.
+
+## lncli Updates
+
+## Breaking Changes
+
+## Performance Improvements
+
+## Deprecations
+
+# Technical and Architectural Updates
+
+## BOLT Spec Updates
+
+* [Fixed an issue](https://github.com/lightningnetwork/lnd/pull/10942) where an
+  lnd node acting as a relaying node (including the introduction node) in a
+  blinded path failed to forward the payment when the next hop was identified by
+  node ID (`next_node_id`) rather than a short channel ID. The next hop's public
+  key is now resolved to one of our channels with that peer using non-strict
+  forwarding.
+
+## Testing
+
+## Database
+
+## Code Health
+
+## Tooling and Documentation
+
+# Contributors (Alphabetical Order)
+
+* bitromortac
+* Olaoluwa Osuntokun
+* Ziggie