Authentication separated

Authentication function separated from initialization so object can be created without waiting for authentication to complete

Built in Realtime Rate Limiting

Added default rate limiting with a new attribute rate_limit that can be used to modify it

Closed websockets

Websockets are closed after use and better timeout error messages

0.4.1 Release

Update version 4.1

Timeout Improvements

New timeout exception and longer timeouts

Fix for missing data before 4AM

Fix for #16

Timestamp needs to be in current day, but before 4 AM it shows previous day.  Any time after 4 AM shows all of the current day