MediaLibrary 0.6.0

This release only adds a couple new features: video groups and database
clearing.
It mostly improves stability and is now much more robust than before.
It notably:
- Adds a title analyzer for video
- Fixes many SQL constraint violations during analysis
- Adds SQL schema integrity checks after migrations
- Adds an unhandled exception callback for the application to log those
- Adds support for recreating the database but keep the manually create playlists
- Fixes a linking issue when using the .pc file
- Handles files larger than 2^32 bytes
- Fixes various crash/issues during rescan or refresh
- Improves filesystem errors handling
- Handles more sporadic SQL errors
- Fixes a drift in folder media count
- Adds by-name video group support

...And a lot more internal changes!
This tag has no release notes.