starting point for custom colors
Started the color parsing stuff
Parsing colors passes some tests
Added a textbox to specify a custom coloring
Updates on the color front
Minor updates
Working but buggy custom colors implementation
Updated the documentation with information about custom coloring
Save as png functionality
svg:title for hovering
Better tooltips
Added the d3tip script to the repo
Use the native tip code
Expand dropdown for custom colors
No more cryptic error messages
Merged custom_colors
Disable zooming and drag while shift or ctrl key is down
Fixed javascript console error
Crudely draw a link line while holding the shift key
Added and remove links