    0.1.1: change in spinBox settings, now the minimal value is 3, proposed by Gerhard Spieles for drawing objects
           like triangle, pentagon, hexagon etc..., when using Circle from    center tool
    0.1.2: rewrite of startup part of rotation tool
    0.1.3: QToolButton is replaced QToolBar, hopefully this would work on OSX
           for snapping of virtual center with "...FromCenterTool" CTRL key has to be pressed
           cleanup
           exchange of values between rubberband and createFeature function mediated with QgsGeometry
    1.0.0: fixed rubberband and invalid geometry issues with the 1.9.0 dev version
    1.1.0: updated to work with the changes made in the vector api
    1.1.1: added metadata.txt to work with 2.0 version
    1.1.2: sip API and other API updates for 2.0
    1.1.3: fixed bug https://github.com/vinayan/RectOvalDigitPlugin/issues/6 