Test on front-end
Rename index.styl to vphi.styl
Add vphi header to build page
Build tests with duo before running
Add node automatically, don't specify ID
Record reflexivity of edges on the edge object
Add getDrawableNodes function for d3 links
Fix typos
Use fromNode and toNode names in digraph.coffee
Increase negative charge on nodes
Remove debug statement
Remove obsolete docs
Node ID bookkeeping is now done by digraph module
Draw arrowheads based on new digraph edges
Add symlinks to testing libraries
Add npm script for testing in browser
Use execSync for duo tasks
Use Should in browser, instead of should
Add pre-build version of sinon
Handle coffeescript compilation errors better