Changes since 0.0.1:
* Added a skeleton to become a canvas editor
* Fixed the license headers to always mention LGPL
* Improved view (un)registration (CcItem)
* Fixed Cursor Position (CcText)
* Added image rendering (CcPixbuf)
* Lines disappear correctly (CcLine)
* Fixed a Segmentation fault in the demo application
(patch by "Mardy", closes bug 335803)
* Don't round widths smaller than 1.0 to avoid disappearing of thin lines
