Fix Heading element not being correctly rendered, and fix cell table widths throwing an error if they are pixel based but the parents are percentage based
0.9.4.3
Fix for some python 3.5 specific syntax
0.9.4.2
Ignore text elements from child validation
0.9.4.1
Don't error with images that have no src attribute.
0.9.4
Add support for rotated text in table cells
0.9.3
Correctly handle CSS inheritance: child styles are applied after the parent ones (before this they were applied top down, children first). This means child styles correctly override parent ones.