History of EmuControl::step 1 change

In client/emu_control.py, lines 79–81 on c17f852c2a5aa7754ddf3a51eb378da648d077b60f7cb33c734d4642c8dff0bf. 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.