fix tabbing
added pelican-langcategory plugin
Merge pull request #276 from fly/fixtabs

fix tabbing
Merge pull request #283 from isms/liquid-notebook-language

[liquid_tags:notebook] Add language highlighting option
Merge pull request #281 from CNBorn/langcategory

Add pelican-langcategory plugin as a submodule
Update timestamps of generated feeds as well
Merge pull request #286 from arty-name/touch-feeds

Update timestamps of generated feeds as well
Update Readme.md
Fix sitemap with disabled pages (fix #206)

Recommendation in pelican < 3.4 was to disable pages using
a False boolean (http://docs.getpelican.com/en/3.3.0/settings.html#basic-settings)
It's now recommended to use '' and the sitemap plugins tries to
join paths using those variables, which won't work with a bool.
This checks that we have a truthy value before joining.
Merge pull request #290 from Keats/master

Fix sitemap with disabled pages (fix #206)
Merge pull request #288 from wilsonfreitas/master

Improve rmd_reader plugin README
Change MathJax URL from deprecated Rackspace CDN

Use new cdn.mathjax.org URL

More information available here:
http://www.mathjax.org/changes-to-the-mathjax-cdn/