v0.3.0

This version fixes some of the issues with the synchronisation of VR headset and Guide tablet. Time delta is usually kept under 50ms without any major hiccups. Tested on Samsung Galaxy Tab S2, Oculus Quest and Oculus Go. Untested on Daydream devices.

New features :
- added synchronisation meter text (delta)
- added button to reset to default synchronisation params

Improvements :
- replaced the built-in video engine with AVPro video plugin for better performance
- picked different default synchronisation settings

Bug fixes :
- fixed bug with Oculus Quest SD card access that was probably introduced with some OS update.

Known Issues
- Separate audio files for binaural recordings is likely broken and hasn't been tested