Fixes:
- Fix pandas warning when retrieving quotes - thanks @difelice #1672
- Replace sqlite3 with peewee for 100% thread-safety - #1675
- Fix merging events with intraday prices - #1684
- Fix error when calling enable_debug_mode twice - thanks @arduinocc04 #1687
- Price repair fixes #1688
Full Changelog: 0.2.28...0.2.29