Thetadata

Docs improvements

Bug fixes

- Added a `thetadata.client.ms_to_time` method that converts a ms_of_day to a time object.
- Added a copy_from method for Quote, Trade, Open Interest, and OHLCVC, which can be used to create a safe copy of each respective object.
- Added new exchange codes including a new OPRA participant, MEMX (Members Exchange).
- Replaced uses of localhost with 127.0.0.1 to prevent a name table issue with certain machines.

- Choose stable vs unstable terminal build.
- Version Fixes

REST API methods that support concurrency.

- Stream error handling
- Pass PING message to the stream.