How to change subtitle text and style programmically

[erkki-l]

How subtitle texts and styles can be modified dynamically using javascript?

The optimal solution is to be able to change single subtitle and style without reloading complete ASS content

[weizhenye]

It's mentioned in #16 but not supported yet.

The current phase of this project is focusing in refactoring with modern Web API and improving performance, which may impact how the API is shaped. I'd like to consider it later.