History of EmuControl::step 1 change

In client/emu_control.py, lines 102–104 on 8ac19619e24b6fcb349832849eafdce5a7bee67d1b2d3de35b233ba629b39b1d. 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 102,104:client/emu_control.py.