# - input/*: Only input.c contains public API, everything else doesn't.
# - output/*: Only output.c contains public API, everything else doesn't.
# - tests/*: Unit tests, no public API stuff in there.
# - input/*: Only input.c contains public API, everything else doesn't.
# - output/*: Only output.c contains public API, everything else doesn't.
# - tests/*: Unit tests, no public API stuff in there.