Release v0.39.0

2021-06-30

Improvements:

• #3642 - Refactor integration tests
• #3637 - Rewrite pegged / liquidity order control flow
• #3635 - Unified error system and strict parsing in feature tests
• #3632 - Add documentation on market instantiation in feature tests
• #3599 - Return better errors when replay protection happen

Fixes:

• #3640 - Fix send on closed channel using timer (event bus)
• #3638 - Fix decimal instantiation in bond slashing
• #3621 - Remove pegged order from pegged list if order is aggressive and trade
• #3612 - Clean code in the wallet package