Merge pull request #3 from pazqo/master

improved tree layout
Bump version
Graph improvements
Fix
Improved forces scale
Added a couple of tests for the preparatory steps to the Barnes-Hut algorithm
Added a Waterfall chart
Added configurable min and max for waterfall
Added the waterfall in the README
Updated ROADMAP
Added some tests for the waterfall chart
Added the possibility to fix nodes in the graph layout
Version bump
Fixed import order
Version bump
added raw instructions
still trying
blabla
first version of connect
fixed connect