Script to turn python styles into style statements.
Deal with .take() and .clear()
Use the style statement to define styles in _errorhandling.rpym.
Add support for style.create.
Use the style statement to define styles.
Allow style names to be keywords.

We have some style names, like transform, that correspond to
keywords.
Initialize the root of the style hierarchy.
Convert 00style.rpy to using style statements.

As part of this, move the list styles into the developer.rpym file.
Error out if a style is too complex.

A style is too complex if inheritance goes more than 100 layers
deep. The most common reason for this is likely that there's a
loop in the style inheritance graph.