PSA: Branches updated to match upstream Godot: 4.x PRs → master / 3.x PRs → 3.x

[akien-mga]

Please note that the branches in this repository have been updated to match the same structure as in https://github.com/godotengine/godot
Information from the updated README:

• The master branch is compatible with Godot's master development branch (next 4.x release).
• The 3.x branch is compatible with Godot's 3.x development branch (next 3.x release).
• The other branches are compatible with the matching stable versions of Godot:
  • 4.0 branch for Godot 4.0.x.
  • 3.5 branch for Godot 3.5.x.
  • 3.4 branch for Godot 3.4.x.
  • 3.3 branch for Godot 3.3.x.
  • 3.2 branch for Godot 3.2.x.
  • 3.1 branch for Godot 3.1.x.
  • 3.0 branch for Godot 3.0.x.
  • 2.1 branch for Godot 2.1.x.

So your PRs for new demos/fixes to existing demos should go to:

• master if they're meant for 4.0 and later (currently not 4.1-specific demo has been merged, so this branch is in sync with 4.0)
• 3.x if they're meant for 3.5 and later (currently no 3.6-specific demo has been merged, so this branch is in sync with 3.5)