Add background setting to ForceAtlas2
Add easing to ForceAtlas2
Remove manual deactivation of the edge quadtree
Merge branch 'fix/plugin/animate' into linkurious-version
Update ForceAtlas2 README
Merge forceatlas2-autostop
Merge branch 'linkurious-version' of https://github.com/Linkurious/sigma.js into linkurious-version