v0.3.7

Overview

Mostly performance and fixes around force closures.

What's Changed

• Avoid 0 sat invoices or fees that go negative by @TonyGiorgio in #553
• Make last_updated optional for ActivityItem by @benthecarman in #555
• Encode LDK channel manager + monitor as hex by @benthecarman in #558
• Add force close channel balance to get_balance by @benthecarman in #557
• Background process error won't panic, more logging by @TonyGiorgio in #559
• Don't cache bdk keychain by @benthecarman in #560

Full Changelog: v0.3.6...v0.3.7