ElementsProject/lightning v0.9.2 on GitHub

We're pleased to announce the 0.9.2 release of c-lightning, named by Sergi Delgado.

This is a significant release with new CLI-level notifications, better channel state reporting, and stable plugin-hook call ordering.

Note that as of this release c-lightning-generated PSBTs are only considered valid by bitcoind v0.20.1 and above.

Did you know: c-lightning deprecates features with 6 months warning, and you can set allow-deprecated-apis=false to test?

Highlights for Users

We now keep track of channel closure rationales. Wonder "why did my channel close" no more. All channel state changes are now listed in listpeers's state_changes.
NEW CLI/RPC notifications! Tired of waiting for close to finish without getting any updates? With notifications, the close command will publish notifications (think CLI status updates) for slow closes. Must have allow-deprecated-apis set to false for these to work.
New optional argument commitment_feerate on the multifundchannel command. This is useful for setting one feerate for the funding transaction and another for the channel commitment transactions.
Two new commands added to hsmtool!
- generatehsm allows you to create an HSM hsm_secret from a BIP39 pass phrase. (Note that due to c-lightning's current seed derivation process, wallet addresses aren't standard 'BIP39 to BIP32' compliant. Which is a fancy way of saying your pass phrase isn't portable to other, non-clightning wallets.)
- dumponchaindescriptors will output the xpub for the HD wallet master key. This will let you track swept c-lightning wallet funds -- anchor outputs and unswept channel outputs won't be visible until swept.
The starting feerate for mutual closes has been reduced to 'slow', to avoid overpayment.
In-memory log buffer now is 10MB, down from 100MB.

We no longer support receiving full gossip from ancient LND nodes
Fixed re-transmission order of multiple new HTLCS. This was causing channel closures with LND.

Plugin hook call ordering. Hooks can now specify that they must be called 'before' or 'after' other plugins.
pyln-client will handle and send RPC command notifications.
pyln-proto now includes a pure python implementation of the sphinx onion creation and processing.
PostgresSQL key-value DSNs now supported.
Plugin hook htlc_accepted can now return a custom failure_onion.

Thanks to everyone for their contributions and bug reports; please keep them coming.

Since 0.9.1, we've had 321 commits from 15 different authors over ~58 days, an average commit rate of 5.5344 commits per day.

A special thanks goes to the 4 first time contributors:

Cheers,
Lisa, Christian, Rusty, ZmnSCPxj