Misc fixes and updates
- Adds a minimum recording length option for session recording. For example,
{record_min_ms: 4000}
won't send any recordings that are less than 4 seconds long. The maximum value allowed is 8000. - Added a fix for session recordings being sent with an empty start time.
- Fixes and improvements for request batcher to support offline queueing and retry.
- Fix for query param parsing/escaping (#443).
- Support for more UTM tags / click IDs (#442).