v50

New features

• #209: Make break-* properties work inside tables
• #661: Make blocks with overflow: auto grow to include floating children

Bug fixes

• #945: Don't break pages between a list item and its marker
• #727: Avoid tables lost between pages
• #831: Ignore auto margins on flex containers
• #923: Fix a couple of crashes when splitting a line twice
• #896: Fix skip stack order when using a reverse flex direction