Write fill attribute value if it differs from parent element, as a temporal fix.

Support "none" in Fill value if inherited from parent

If elements are nested in groups and have different fill values than
their containing group the fill value wouldn't be written correctly.

added nuget information

fixed typo.

One change addresses matrix multiplication order for transformations. The other change addresses the calculation of the control point for smooth CurveTos.

When using T, t, S, or s to create curves, the curves were not rendered
properly. The control point was causing the curve to be inverted.

Embedded transformations were not being applied correctly; they were
being done in reverse order.