Remove itemInserted signal
Add arrow
Add ProductionLine.py
Add production process
Add bfs to convert production line to diagram scene
Add fail unit test
Extract AddProcess function
Rename Update to FillScene. Add unittest with mock to test it
Add fail test for ProductionLine
Add ItemStack
First implementation of production line mechanics
Remove inputs field from process
Construct a ProcessGrapics graph from ProductionLine
Handle same outputs from different processes
Outage commit!