Add markov-input highlight overlay on filedrag

Next up is making it slightly more attractive, i.e. transitions and
maybe a slight zoom in on the "Upload File"
Fix button class naming convention
Add upload file during drag on body (experimental)

Doesn't work right now, for some reason.
Fix dragover problem
Temporary: change to dragend listener to compare

Now there's no flickering on chrome, but an unsuccessful drag (i.e.
moving back to filesystem) results in the overlay staying there.
One idea is to make dragLeave conditional somehow?)
Add working drag js solution with 150ms delay

Not ideal, but it's what works for now. Still flickers a bit, I think,
if messing around with left column, but who actually will do that?
Fix buttonDone -> button-done class
Reduce README
Revert "Reduce README"

This reverts commit 658ce3d3f960e05492f76814a9f7719e7df82f18.
add .removeEventListener to dragOver

prevents drag over from being run again and again and again and again and again and again.
Add randomColorStyle.min.js

Prepare yourselves for spontaneity
Add random color support

Because, well, why not?
Merge branch 'more-ui-improvements' into gh-pages
Change random color luminosity to dark

It's less fun, but more readable.
Add check for integer in lengthInput

The message up top changes to '...must be an integer' if the value
inputted is either 1. not a number or 2. not an integer (i.e. doesn't
round evenly).

TODO: see if there is a better way to handle the "not an integer"
notification, including popup, tooltip, or maybe even just bringing
more focus to the changed text.
Change file indicator hover-over to random color

...by adding it to the list of styles modified by randomColorStyle.
This requires a special case where I convert the hex value to rgb and
attach an alpha of 0.5, since my current randomColorStyle setup doesn't
allow different cases (But who knows!)
Add very basic tokenizer improvement

Next up: sentence boundaries, etc
Improve tokenization, add sentence boundaries

`s` and `/s`, which are unbreakable because I get rid of
quotes/backticks later on. Check the FIXME, however.