v0.12.0

What's Changed

• feat: delete intents left behind by abandoned batch attempts by @bonomat in #280
• feat: let the server filter out spent VTXOs by @bonomat in #281
• feat: set BIP-322 signed message field on intent proofs by @bonomat in #282
• fix: fetch the last page of VTXOs by @bonomat in #283
• fix: validate tx graph finality by @Kukks in #273
• fix: reject a VTXO page that does not advance by @bonomat in #284
• Release crates version 0.12.0 by @bonomat in #286

Full Changelog: v0.11.0...v0.12.0