because we need to update build timestamp each time anything related to
rendering is changed. The rbtag crate only supports git commit times.
Also, reproducible build isn't exactly a goal of this project.
Since I don't expect to pull in any more significant dependency, and we
are far from running out of the 1MB compressed limitation of code size,
we should be perfectly fine flipping this on instead of sticking with
optimizing for size
Peter Cai