History of gc 4 changes

In src/cli/workspace.rs, lines 1009–1044 on e15dc29f109b4680aaef4b59f452e3375d084199c1bbe9ad8de6fff5e0baaaa8. 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.