[release] 0.48.0 - Initialization details, remove noisy logging, fallback bug fixes (#360)

### New Features
- Initialize now return initializationDetails which has information on
data source, is initialize successful, is the store populate, duration
and error
  ### Improvements
  - remove noisy logging
  ### Fixes
- fix a bug where fallback behavioral is triggered for id list no matter
the option





>Included In This Release
>- 76e1279 kat-statsig
>   - Some bug fixes (#359)
>- 50910bb kat-statsig
>   - Add Initialization Details + context (#347)
>- badb04c kat-statsig
>   - fix flag (#358)

Author: kat-statsig

statsig/version.py

@@ -1 +1 @@
-__version__ = '0.47.2'
+__version__ = '0.48.0'