Simple Sparkline graphing plugin 0.2

I have made some improvements to my Simple Sparklines graphing plugin. The main new feature is that the height of graphs can automatically match the size of surrounding text.

I have also cleaned up the code so that the graph generating function can be used by by other plugins or from templates (provided you have useful data to pass to it!).

The plugin is primarily meant for sparklines, small, inline, word sized graphs. It can be used for larger graphs but is not well suited to thay role except for very simple graphs.