History of sparse 3 changes

In src/cli/workspace.rs, lines 1938–1970 on 579afd107b9b8616ea2157b86efa07058c2be4feab6a5df6b00ddccbfc8796bf. 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 1938,1970:src/cli/workspace.rs.