f updates and process all the pending changelogs

Author: TheBlueMatt

CHANGELOG.md

@@ -61,6 +61,8 @@
    much more granular reasons for HTLCs having been failed (#3744, etc).
  * `Event::HTLCHandlingFailed` is now generated any time forwarding an HTLC
    fails, i.e. including cases where the HTLC onion is invalid (#2933).
+ * `Event::HTLCHandlingFailed::failure_type` of `UnknownNextHop` has been
+   deprecated and is no longer generated (#3700).
  * `OffersMessageFlow` was introduced to make it easier to implement most of the
    BOLT 12 flows without using a `ChannelManager` (#3639).
  * `ChannelManager::pay_for_bolt11_invoice` was added (#3617).
@@ -83,11 +85,17 @@
    data between remote scoring info and local payment results (#3562).
  * LDK will now store up to 1KiB of "peer storage" data in `ChannelManager` per
    peer with which we have a funded channel (#3575).
+ * The `Persister` trait was removed. You can match on namespace constants in
+   `KVStore` to restore custom logic for specific storage objects (#3905).
  * `ProbabilisticScoringFeeParameters::probing_diversity_penalty` was added to
    allow for better information gathering while probing (#3422, #3713).
  * `Persist` now takes a `MonitorName` rather than a `funding_txo` `OutPoint` to
    ensure the storage key is consistent across splices (#3569).
  * `lightning-liquidity` now supports persisting relevant state (#4059, #4118).
+ * Various instances of channel closure which provided a
+   `ClosureReason::HolderForceClosed` now provide more accurate
+   `ClosureReason`s, especially `ClosureReason::ProcessingError` (#3881).
+ * A new `ClosureReason::LocallyCoopClosedUnfundedChannel` was added (#3881).
  * Some arguments to `ChannelManager::pay_for_offer[_from_human_readable_name]`
    have moved behind `optional_params` (#3808, #3903).
  * `Event::PaymentSent::bolt12_invoice` was added for proof-of-payment (#3593).
@@ -145,10 +153,17 @@
    channels after downgrading (#4117).
  * After upgrading to 0.2, downgrading to versions of LDK prior to 0.0.123 is no
    longer supported (#2933).
- * Blinded paths generated by previous versions of LDK, except those generated
-   for inclusion in `Bolt12Offer`s will no longer be accepted (#3917).
+ * Upgrading from versions prior to 0.0.116 is not supported (#3604, #3678).
+ * Upgrading to v0.2.0 will time out any pending async payment waiting for the
+   often offline peer to come online (#3918).
+ * Blinded message paths generated by previous versions of LDK, except those
+   generated for inclusion in `Bolt12Offer`s will no longer be accepted. As most
+   blinded message paths are ephemeral, this should only invalidate issued
+   `Refund`s in practice (#3917).
  * Once a channel has been spliced, LDK can no longer be downgraded.
    `UserConfig::reject_inbound_splices` can be set to block inbound ones (#4150)
+ * Downgrading after setting `UserConfig::enable_htlc_hold` is not supported
+   (#4045, #4046).
  * LDK now requires the `channel_type` feature in line with spec updates (#3896)
 
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