This implements %regex_sub built-in function to enhance string-processing capabilities, allowing users to perform substitutes like:
- removing non-ascii characters
- replacing subsequent whitespace characters with a single whitespace
Thanks @tbabej !
Readthedocs for ytdl-sub is getting a massive overhaul to both look and read like a modernized app. It is still very-much work-in-progress, stay tuned for more!
Huge thanks to @Svagtlys (aka Momo) for driving this
