update outdated dependencies

[sadraskol]

I made mochiweb dependency less restrictive in order to have other dependencies depending on a latest version.

[sadraskol]

😞 I thought the build would pass, fixing that when i have more time.

[rrrene]

No worries. 👍

[sadraskol]

The problem comes from the issue you pointed out on mochiweb. I don't see any proper solution to this, it seems that their html parsing is very loose and does not conform to html docs.

One solution could be to introduce a proper html5 parser, like gumbo, but this is really far from my reach. It would be a nice tool for the erlang/elixir ecosystem if someone feel like doing it 😉