Prepare build script.
Add more info and code.
Unbuildable commit - Add Event handler types.
Buildable dtk, not runnable yet.
Move options to a separate module.
Getting closer to nwe events.
Move interpreter out of App and into its own module.
Move setVar and getVar outside of Widget class.
Tracing improvement.
Remove dtk.options.
Remove generic signals enum.
commit some more stuff.
Test before real commit.
Too many changes in this commit.
Build event handling.
Fixup events.