Feature request: add support for .ass subtitles

[htadashi]

First of all, thanks for this useful chrome extension :)

I'm writing this issue to ask if it is possible to integrate .ass subtitles in your extension. This type of subtitle is very useful for the purpose of language learning (e.g.: it could be used along with the program jijimaku to add word definitions in the subtitle).

[yashagarwal1411]

Hey sure, I'll take a look over it this weekend.