lack of compatibility with RC versions of Godot.

[rcalastro]

Describe the bug
Current branch isn't compatible with most recent release candidates versions of Godot.

To Reproduce

1. Just open a project that works fine with beta2 in RC4 or RC5 versions.
2. Alternatively, try to install the addon and open the demo scene in these versions

Expected behavior
There will be 2 lines with error in plugin.gd file.

• func _handles(o: Variant) -> bool:
• func _edit(o: Variant) -> void:

"The function signature doesn't match the parent. Parent signature is _handles(Object)"...

Additional context
I checked the godot documentation (latest) and both "handle" and "edit" functions refers to Object instead a Variant.
https://docs.godotengine.org/en/latest/classes/class_editorplugin.html#class-editorplugin-method-handles

I tried the obvious solution, replacing Variant to Object, but didn't work.

This addon is awesome :)

[fire]

I tried updating the latest. Try testing.

[jarneson]

Closing as stale, seems to be mostly working in 4.1