0.4.0

Version bump to match version on PyPI.

• 6f3092e Add styling for <code>, also change body background to #fff
• f425f0c Add tag pages at /tag/{{tag}}
• 3b65ed5 Change some margin and padding in monoblue
• 874c08e Delete skins to make maintenance easier
• 834e7a9 Fix issue with custom dates getting overriden by front-matter
• 238d13d Update screenshot in README.md
• d92ec60 Make arbitrary front matter data available as variables in template
• b903327 Add empty line in petroglyph command line script to fix flake8 issue
• bb8a75f Update README.md to include pip install docutils
• 242845f Add support for reStructuredText using docutils
• 4f51af0 Update README.md to add info about installating from pip
• 2de3aca Move README.me from petroglyph/ to repo root
• 703d445 Fix code style issue in setup.py
• da54926 Change to use setuptools packaging
• 7c5d498 Fix typo in README.md
• b4c08d4 Add Travis CI build status badge to README.md
• 903db03 Added .travis.yml to run flake8
• 8e091dd Update G+1 code in skins
• e695464 Add spacing to bottom of post pages
• 9d0690c Fix font inclusions in HTML link tags
• b2555ae Add missing closing brace in theme CSS files
• c96bbaa Fix blockquote border styling
• 36b8dbb Increase line-height for all posts
• c52a901 README.md: Add information about other included themes
• 0d6c024 Add instructions for how to add petroglyph to $PATH in README