History of gc 4 changes

In src/cli/workspace.rs, lines 1009–1044 on c5ce0367eddf86da8a4e69d097749b12178b4af60c616dbf91a12cb131419302. 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.