History of X16TestBench::__toint8 1 change

In testbench/testbench.py, lines 88–93 on rrdc-perf. 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 88,93:testbench/testbench.py.