Release v0.4.0

What's Changed

• Context menu config #254 by @jchanvfx in #276
• Fix set property by @samyhocine in #266
• Widget bug fixes.
• Updated NodeGraphQt.SubGraph.delete_nodes() to not allow port node deletion.
• Removed NodeGraphMenu.all_commands() function.
• New function NodeGraph. set_context_menu_from_file() , NodeGraph. set_context_menu()

https://chantastic.nz/NodeGraphQt/api/html/graph.html#NodeGraphQt.NodeGraph.set_context_menu_from_file
https://chantastic.nz/NodeGraphQt/api/html/graph.html#NodeGraphQt.NodeGraph.set_context_menu

Full Changelog: v0.3.2...v0.4.0