Include paths are updated to include the directory. It seems that
CodeWarrior will search for include files recursively, which means that
"error.h" may resolve to the wrong file (there are two). I am unsure of
the rules CodeWarrior uses to find header files.
Support for older versions of Universal Interfaces has been added.
The project code has been reworked after thoroughly reviewing Inside
Macintosh: Files. It is not complete, but it compiles, and the behavior
of the Save / Save As commands have been thought out more carefully.
The trailing comma is supported in MPW and GCC. It fixes the formatting
issue with clang-format and makes cleaner diffs, so trailing commas have
been added to enums and clang-format has been run over the sources.
