Merge branch 'release-0.1' into develop
Merge branch 'master' into develop
add simple rocks
add slowrocks binary + improve simple rocks
add some shadow on the rocks
Merge branch 'feature-rocks' into develop
add a Geometry file with all geometric stuff
make random engine abstract (hide the implementation)
begin abstraction of cairo
implement what is needed for the current items
transform the old code with direct calls to cairo into new Renderer calls
path functions now returns the current path
add lerp
add lineStroke
add an example of slowtree
add an entry to the ChangeLog
bump version to 0.2.0
update copyright years
Merge branch 'release-0.2.0'