[BETA] Level Editor Update

I have to admit it. I lied.
I told everyone I didn't want to implement Steam Workshop features. But guess what, it's done now.
The editor is still available only in the BETA branch, but it will change soon.
The problem was that the native Steam wrapper I used crashed the game on callbacks and I needed to write my own lib to deal with it.
Leaderboards changes in BETA branch
It's now possible to see how your friends performed in each (official) level.

The score histogram has been changed as well. The worst scores (i.e. worse than average minus 2 seconds) are now ignored, making it readable and meaningful.

Expect more small updates coming soon.