v0.11.0: Simon's Carefully Chosen Release Name

We're pleased to announce the 0.11.0 release of c-lightning, named on behalf of @SimonVrouwe.

This release is the first under the rebranded "Core Lightning" name.
(Note: binaries are labelled v0.11.0.1 due to a minor bugfix required for reproducible builds).

Highlights for Users

• We now finally support multiple live channels to the same peer!
• If we detect rust support, we'll build the cln-grpc plugin for full native GRPC support.
• We advertize an external IP address if it's reported by two or more peers (disable-ip-discovery or always-use-proxy disables).
• You can specify two databases with --wallet, and we'll write to both at once (sqlite3 only).
• pay supports BOLT 11 payment metadata: we'll send it if it's in the invoice.
• New setchannel command (deprecates setchannelfee) allows setting max and min HTLC amounts. Try lightning-cli setchannel all 0 for #zerobasefee.
• pay can be forced to exclude channels or nodes with the exclude
• Significant speedup in start times for old nodes with many historical HTLCs.

Highlights for the Network

• We send the remote node's IP address in the init message, so they can tell what it is. (lightning/bolts#917)
• We are more aggressive in sending our own gossip to peers, to help propagation.
• Default port is set by network, so regtest and testnet defaults are different. (lightning/bolts#968)
• We never generate legacy onions, it's always TLV. We still forward legacy onions for now.
• We flush sockets before closing, so errors are more likely to reach the peer.
• Experimental support for announcing DNS addresses in node_announcement (lightning/bolts#911)

Highlights for Developers

• pay has a maxfee parameter, which sets a simple LND-style upper fee (vs using maxfeepercent and exemptfee)
• You can create invoices with only a description hash, using deschashonly. We still store the full description, so use restraint!
• pay has deprecated paying solely by description hash: you should provide the full description, too.
• delinvoice has a new desconly parameter to simply trim the descriptions, but leave the rest intact.
• We have a rust crate cln-rpc to easily interact with our JSON-RPC.
• msggen tool allows easy generation of language bindings for our JSON RPC interface.

More details can be found in the changelog.

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

Since 0.10.2, we've had 712 commits from 37 different authors over 170 days.

A special thanks goes to the 18 first time contributors (a new record!):

• Aaron Dewes
• Tim W
• manreo
• Gregory Sanders
• zero fee routing
• Stephen Webel
• Michael Dance
• Marnix
• lightning-developer
• kiwiidb
• Jules Comte
• JohnOnGit
• GoofyAF
• Denis Ahrens
• Clay Shoaf
• benthecarman
• azuchi
• Anand Suresh

Cheers,
Christian, Rusty, Lisa.