History of gc 4 changes

In src/cli/workspace.rs, lines 1009–1044 on 4afab467e35f35023c84f531f79824cb10e31c242baa279de8b934177f8c84f1. 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.