fix doc
sl2: Analyze sl2 statements (not including python).
Keep the source of PyCode objects around.

We're no longer as memory-limited as we once were, and this makes
the source available for code analysis, when necessary.
sl2: Perform const/not-const analysis on Python code.
sl2: Pure functions should also be constants.
sl2: Flag renpy.<name> as pure functions, when appropriate.
sl2: Make defines and transforms pure.

They should be, and this should help make more things const.
sl2: Let the user dump the results of const analysis.
sl2: Analyze screen parameters.
sl2: Make sl2 the default screen language.
Invalidate, rather than redraw, on Transform.set_child.

This prevents a redraw from unconditionally occuring when the
child is changed - we only want the change to occur if we're
not already in a redraw.
Fix typo.
sl2: Flag more things pure.
Generate lists of const and pure variables.
Add a large-fonts mode to the launcher.

Fixes #399.
Add some self-voicing support to the launcher.
Include Ren'Py with android distributions.

RAPT will now use this version of Ren'Py, which can include patches
by the creator.

Fixes #368.
Ignore tmp/ directory when navigating .rpy files.
Add tts_function config to support user defined TTS function
Move the process managiment into default_tts_function