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Mat Strange
4ec493e17a
The engine reroutes the connectors glued to the shapes they join after every command that can move a shape. The reroute can move a connector even when the command itself changed nothing, and that movement has to be undoable: the step the command's dispatch pushed may not be put away before the reroute has run. The command's own change is now decided first, so the reroute still sees the new layout, and the undo step is put back only after the reroute, when nothing moved. The typing behaviour is pinned in tests_typing.rs, as a typing fix is.