Single example within the doc index.
Relative link to example URL. Apparently target isn't intelligent.
Probably need to include the example png's for Read The Docs
Lots of work on automating examples. Added grouped vs ungrouped examples.

 - Also a new feature where you can set config settings in the Config init.
Changed png/gdf/json ignores to only apply in examples.
Documentation tweaks.

 - Additional styling for example thumbnails isn't needed for Read The Docs,
   as it already contains a border-bottom hover.
 - Added a link to ungrouped example from the grouped example.
Basic example added. Hopefully fixed github README.rst URLs.
Updated the example generation script to not regenerate images every time.
Some documentation updates. Mostly just todo entries :)
Americanized the spelling of "visualisation" just to be consistent.
More README updates
Made all links go to https://pycallgraph.slowchop.com/ instead of Read The Docs.
Note about documentation :)
http instead of https. Certificate domain mismatch issues with the CNAME.
Fixed up some links in the README.
Regenerated docs
CLI doc update. stdlib now default False. Output now receives config.
Added test for Color and Util
Oops, left some debugging in there.
Fixes for being able to import modules for external scripts.

 - Added current working directory to the path
 - Reinstated sys.argv so that the external script will correctly parse the
   correct arguments