The convention is that sys.exit(...) is called only if a module is run as a script,
and that main() entry points use return statements to report exit codes: 0 (or None)
for successful execution, or any non-zero integer for errors.
E.g. see the console scripts generated when installing with pip.
modify scripts to work as setuptools 'console_scripts', where the main
function takes no arguments;
add empty identifier "" in 'packages' argument of setup, to install the
standalone sstruct.py and xmlWriter.py for legacy support;
remove py2exe since it is made redundant by setuptools 'console_scripts';
remove custom 'build_ext' command since the eexecOpmodule.c is no longer
present.
Lazy loading has implications on how people use objects.
So, by default, don't load lazily. This only affects
GSUB/GDEF/GPOS/etc and is closer to what fonttools used
to do traditionally.
Turn lazy loading on in subset and inspect.
