Time and Frames limits gone after refactor

Thanks for merging the -profile fix so quickly! At the same time I'd noticed Time and Frames were also in options but not implemented anymore.

While I'm still trying to grok how the program works I can fix these to help learn the code structure, but wanted to open this issue first in case you had specific plans for redoing or replacing these features.

If "any way is fine" I'll just think of something. :)

Thanks!