This is the start of an ad-hoc testing system. No clue if it's a good idea or not, but I need to be doing something for testing, so let's start.
Each test file should be appropriately named after whatever it's testing,
in the format [testname][3-digit-zero-padded-number].bs.
The "golden" generated file should have the same name,
but .html.
Run tests by running bikeshed test.
If any fail, it'll print the first element mismatch in each file,
with an inline diff from the golden.