trackmania-rl/tmrl: Release 0.4.2

This update improves TrackMania support (thanks @LaurensNeinders !)

**Perform a clean install by deleting the 'TmrlData' folder AND Plugin_GrabData_0_1.as from OpenPlanetNext\Scripts

Release 0.4.2 ships with an optimized version of the OpenPlanet script for the default TrackMania environments. In particular, it should alleviate a common issue where the environment randomly times out for a roughly constant time even on high-end PCs.