- Bumped version 0.3.2 -> 0.3.3
- Improved the error message in Sidecar_Singleton_Base->_get_called_class() and added a __( $msg, 'sidecar' ) wrapper for translation.
- Added a Sidecar_Singleton_Base->_get_hooked_class() for future use since we coded a proof-of-concept earlier
- Added a commented out Sidecar_Singleton_Base->instantiate() showing how to call Sidecar_Singleton_Base->_get_hooked_class(), also for future use.