Just a short change here.  There were issue when using the main menu and the in-game pause screen menu with the keyboard.  The focus was not setup correctly and so buttons were being activated on menus that were not currently in focus.

Long story short, keyboard navigation should now work as expected.  The control remap screen still requires use of the mouse, but if this is an issue for anyone let me know and I'll get it fixed.

The only other thing of mention is I've updated the game to use Godot 3.3.3.  With rudimentary testing this doesn't seem to have caused any issues.  I've been using it solidly with the same code but I'm sure I'll always miss something so let me know if there are issues.