Highlights

• API V2 with Taproot Swaps
• PostgreSQL database
• mpay - a CLN pay plugin

Bug Fixes

• Forbid reverse swaps with same preimage hash
• Race condition when setting invoices of swaps (#432)
• Exclude most expensive route in mpay
• Deduplicate already paid mpay invoices
• Mpay tests in CI
• Route hint delay on retries
• Order of mpay route stats
• Gas price BigInt conversion error in FeeProvider
• Locked funds prometheus metric with PostgreSQL
• Make Anvil miner faster
• Stats of first month of year
• Python plugin certificate creation test
• Tests broken by Taproot swaps
• Allow modded versions of CLN
• CLN node URIs
• Handling of invoices with msat precision (#454)
• Wrong status event for eligible swap refund
• Remove "l" from swap id generator (#457)
• Reset LND mission control on interval (#461)
• Include RSK in API v2 pairs
• Do not overwrite failure reason when expiring swap
• API v2 swap routes

Documentation

• Misc updates (#429)
• Fix P2SH nested P2WSH hashing
• Swagger specs for API V2 endpoints
• Redeem script clarification (#463)

Features

• PostgreSQL as database (#425)
• Mpay plugin prototype
• Try direct channels first in mpay
• Mpay list command
• Reset path memory in mpay
• Refactor route fee calculations
• GRPC for mpay
• SQLite mpay database
• Getswaptransaction for Ethereum chains
• Swap node config (#442)
• Mpay route cache (#447)
• Add nodes API v2 (#451)
• Taproot submarine swaps
• Cooperative Taproot submarine swap refunds
• Taproot reverse swaps
• Uncooperative Taproot swap spend cli
• BIP-21 in invoice memo of reverse swaps (#458)
• PostgreSQL database backups (#462)
• API v2 pairs
• Chain endpoints in API v2
• API v2 get submarine swap transaction
• API v2 swap status
• Mpay to pay invoices

Miscellaneous Tasks

• Update changelog for v3.3.0
• Update license for v3.3.0 release (#426)
• Minor readme update (#428)
• API landing page favicon (#430)
• Update Python dependencies
• Put MIT license on CLN plugins
• Update to LND v0.17.1-beta
• Update dependencies
• Bump LND version to v0.17.2-beta
• Bump cryptography from 41.0.5 to 41.0.6 in /tools (#438)
• Update dependencies
• Bump max supported CLN version
• Update Docker images (#444)
• Bump CLN version to v23.11.1
• Bump CLN version to v23.11.2
• Prettier import sorting
• Bump follow-redirects from 1.15.2 to 1.15.4 (#456)
• Bump GETH Docker image version
• Generate mpay TypeScript protos

Refactor

• Cleanup Python project structure
• Use external SQLAlchemy sessions
• Include exclude check in get_routes
• Stats queries for PostgreSQL

Testing

• Add rudimentary tests for mpay
• Add Taproot related tests
• MusigSigner integration test