History of gc 4 changes

In src/cli/workspace.rs, lines 978–1013 on 8c30d814f2cc6160bd620a48f70c002991c2ef13fa46565a77151c2854b0c13d. 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 978,1013:src/cli/workspace.rs.