v0.20.0

Improvements

• #211 feat: adds indexer to btc staking tracker
• #229 chore: bigger batch size for fetching delegations
• #233 chore: cleanup ckpt cache
• #235 chore: use file based lock to allocate ports
• #232 chore: comply to rbf policy
• #224 chore: poll for evidence

Bug Fixes

• #209 fix: wait until slashing tx k-deep
• #223 fix: consider minimal fee for bump
• #226 fix: reselect inputs after adding manual output
• #229 chore: lax unecessary btc tx checks
• #237 fix: send on closed chan