New Features
- Set, add, and remove groups the user belongs to.
- Track events with specific groups
- Support for group-level profiles—set, update, and remove properties on account/group objects in Mixpanel
- Allow to remove All device push tokens, thanks @asiliuk for providing this PR
#288
Bug fix
- Fix EXC_BAD_ACCESS crash in background thread and a complete audit for async dispatch, special thanks to @RamblinWreck77 for providing this PR
#285