History of gc 4 changes

In src/cli/workspace.rs, lines 1009–1044 on c63fed2e046589c891fd5fcf516906d762ef93b3d8bc7069ebb7201368163ac9. 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 1009,1044:src/cli/workspace.rs.