Migrating Python plug-in from Gimp 2.10

[Ofnuts]

1) AFAIK not all argument types have existing selectors in current Gimp3 versions (for instance, image and paths) so when they are used as arguments, there is nothing for them in the auto-generated dialog

2) you can generate you own complete dialog. AFAIK you can add GimpUI elements in a regular pyGTK script.

3) see 2)