History of X16TestBench::__toint8 1 change

In testbench/testbench.py, lines 88–93 on ea9efff4e5406b975d308d34a1f8ea123381cce12ed7b5f80fac3cae8792d2c3. 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.