History of gc 4 changes

In src/cli/workspace.rs, lines 1037–1072 on 091fef80755d422062f2abeaebd66da497997257dcd4c3955ca0cac9eba178be. 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 1037,1072:src/cli/workspace.rs.