watch-til and documentation mismatch.

[cwoac]

According to the help text:

watch-till or wt mark a specific episode as watched and all of the episodes before it

But actually it only marks all of the episodes before it as watched. I'm not actually sure which behaviour is intended, hence the lack of a patch.

[hiquest]

RIght, thanks for noting @cwoac. Will fix as soon as I can