Merge pull request #14 from jessicamcinchak/29_highlight_edges

29 highlight edges
Merge pull request #35 from bnchdrff/gh-pages

remove unused fn
highlight link only if d.grayed_out is false, refs #29
Merge pull request #16 from jessicamcinchak/29_highlight_edges

29 highlight edges
Merge branch 'highlightedges' into gh-pages