History changes!

I'm done transcribing the code needed to make History work, and hey, it works nicely! Without any more effort than just translating Ruby. There may be bugs to be discovered though... like always.

MyImouto's History Channel

Also I realized that the library used to show text diffs in the Wiki, that is, Horde Text Diff, actually could render the diffs almost like in Moebooru. My bad.
Here's a comparison:

Not big deal.

Release should be soon...