Install coverage tools in tox environments.
Add support for -weasy-hyphens: none, cache hyphenation dictionaries
Document hyphenation.
Merge branch 'hyphenation'
Released date for v0.17
Docs: Fix the css3-text link.
Add python-dev to Debian install instructions.

This package contains the Python developement files needed for compiling CFFI.
Docs: s/GTK/GTK+/
Clean the line splitter
Add hyphenate-character
Add hyphenate-limit-zone
Add hyphenate-limit-chars