History of EmuControl::step 1 change

In client/emu_control.py, lines 79–81 on 69f777699a51a32488de73712a46a06bcb392a6e1f12896d385bd4b3b44b3884. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 79,81:client/emu_control.py.