1.2dev: Refactored `PygmentsRenderer` class. Refs #5654.
1.2dev: Refactored `PygmentsRenderer` class. Refs #5654.

Break _init_types function into 3 lazily-evaluated properties.


git-svn-id: eda3d06fcef731589ace1b284159cead3416df9b@14208 af82e41b-90c4-0310-8c96-b1721e28e2e2

walty8/trac,walty8/trac,walty8/trac,walty8/trac