Maintenance release: Godot 3.0.2

This is a fairly small release but still something to be excited about! We found some small issues with the 3.0.1 release that we've decided were worth releasing a 3.0.2 for, the most important fix being that it's now again possible to run an individual scene of a project that does not have a main scene set. We also found the reason why tooltips were disappearing for some users, a bug that we've had for a long time.

We also have some love for C# users in this release: There was a regression using transforms from C#, and the commits that caused them have been reverted. Godot will now also no longer crash if you have a .mono directory created by an older release. This should make the C# workflow a lot better from now on.

Check the detailed release notes to see what's new in Godot 3.0.2, and what bugs have been fixed.