Signed-off-by: Dmitry Baranovskiy <dmitry.baranovskiy@gmail.com>

version 0.6: new "animate" method. Old transform, scale and rotate rewritten. Added support of path as an attribute (attr("path", "M30,30…")) as well as rotation, translation and scale. Plus some bug fixes and refactoring.

Don't round calculation of rowHeight and columnWidth in the drawGrid function. If you want to plot points on the drawn grid, rounding these figures will lead to inaccuracies.
Signed-off-by: Dmitry Baranovskiy <dmitry.baranovskiy@gmail.com>

Rewrite transformation part (again) for SVG.
Small code improvements.

Fixed couple of bugs for IE, especially with changing attributes for x and y. Added colour functions rgb2hsb & hsb2rgb. Also included fix by netnichols.

attr("name") returns current value for attribute
scale(x, y) scales object horizontally and vertically, use negative values to reflect
some bug fix.