Fix for Safari 7 where we also need to write SVG width / height as style attributes for the chartist responsive containers to work properly. Fixes #68
Limitting areaBase into range of bounds low / high so that the area is never spaning outside the chart canvas. Fixes #65
Refactored code to move getHeight and getWidth into Chartist.Svg where it can be called as non-chainable function on elements, fixes parts of #51
Updated to 0.2.2