git-todo - Find recent TODO lines in a Git repository

Age	Commit message (Collapse)	Author
2020-09-17	main.rs: Accept a ref as a command line argument	Teddy Wing
	If a ref is given on the command line, use that as the diff base. Otherwise default to master.
2020-09-16	lib.rs: Replace top-level `unwrap()`s with `Result`s	Teddy Wing
	Add a new `Error` type that we can return in the failure case. Still need to work out how to handle errors inside the diff callback.
2020-09-15	src/main.rs: Print TODO lines between master...workdir	Teddy Wing
	Look for TODO lines since the "master" branch. For each TODO line, print the file it's in, its line number, and the line, à la grep.
2020-09-14	Initialise new Rust v1.46.0 project	Teddy Wing
	With the following command: $ cargo init --bin