add initial support for bundled edges; improve performance for unrendered labels
fix bundled edges hit detection; add styles for labels as html
bugfixes & replace tabs w/ spaces
remove old svg renderer; replace simple strings like "foo" w/ 'foo'; more complicated cases can be done more manually
replace some numeric strings and hyphened strings
clean up style & selector etc
add support for :simple and :loop selectors
good support for haystack style edges
also hide edges on mousewheel
hide edges on node drag
update docs w/ performance notes; improve performance by caching label dimension calc'ns; make ele.source() etc faster (makes renderer faster); throttle move interactions for faster renderer; improve hideEdgesOnViewport
same change as prior pull request #426
add #427 fix to 2.2. branch
improved impl for bfs & dfs
add amd/requirejs support; fix style bug; fix flicker on resize renderer bug; graph algos done minus kruskal; todo docs & unit tests
fix up graph theory functions; document them; add tests for them
add note about node styles & performance
remove console.log
fix test ref
add concentric layout