History of gc 5 changes

In src/cli/workspace.rs, lines 1037–1072 on 05059d434aca0f61dd413c0b58a5656c6b1a1559c3c0f4497961d8d96d938708. 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.