Release v0.9.0rc0
Pre-release
      Pre-release
    
        This is a pre-release for 0.9.0. Please test.
Enhancements
- Added a timeout parameter to prevent infinite hangs (#790)
 - Added AlphaVantage endpoint to get historical currency exchange rates (#764)
 - Improved logging when rate limited (#745)
 
Backwards incompatible API changes
- Dropped support for Python 2.7. The minimum python version is now Python 3.6.
 - Removed Robinhood which no longer exists
 - Immediately deprecated AlphaVantage quote reader which used an end point that has been retired
 - Immediately deprecated Enigma which has substantially changed their business model and API