v0.27

New features:

• #295:
  Support the 'rem' unit.
• #299:
  Enhance the support of SVG images.

Bug fixes:

• #307:
  Fix the layout of cells larger than their tables.

Documentation:

• The website is now on GitHub Pages, the documentation is on Read the Docs.
• #297:
  Rewrite the CSS chapter of the documentation.