multiple node selection now implemented
disabled double click to zoom if double click is on a node
edge bug where the inactive hover state would reveal is fixed, nodes now have active, selected, active:hover, selected:hover, inactive, inactive:hover styles
alchemy.js site has a link to main site in footer
pretty sure this fixes the header logo link from issue no. 222
Merge pull request #228 from ifjorissen/ifj_issues

Misc. Bugs and Issues
integrated node multiple select
fixed node click bug where d3 would add a node on click/ mouseup