Release Name: 0.6.6

Notes:
Ok, after a few days wait, here it is.


Changes:
Changes for 0.6.6 (since 0.6.0):
* Now visualizing when battery is charging or "full", by shading the graph background
* Added "About" dialog
* A bit thicker line for graph drawing, to make it look nicer ;-)
* Graphing accuracy fixes
* Small optimizations (it's still slow though)