v0.6.1

Gtk4 v0.6.1

Diff since v0.6.0

Merged pull requests:

• add more tests (#48) (@jwahlstrand)
• parameters argument for GSimpleAction, add_action, add_stateful_action (#51) (@jwahlstrand)

Closed issues:

• Package Ports (#4)
• Using ThreadPool :interactive for the Gtk loop (#47)
• Add stateful action with parameter (#50)