New style, better documentation

New Style

A new style giving more space to the actual documentation is the biggest feature in this release.

New features

• New buttons option allows to add new buttons on the landing page, thanks @aidan-casey for the contribution (#444)
• Jump buttons at the bottom of the page can now be disabled with a new jump_buttons option, thanks @eisbehr- for the contribution (#455, #459)

Documentation improvements

• Clarify documentation, improve discoverability of features and options (#453)
• Clarify which MarkDown flavor we use (#460)
• Added another site as usage example (#450)
• Fixed headings, thanks @bennyn for the contribution (#446)
• Fix readme links (#457)

Bugfixes

• Computed raw pages now send the correct mime type as a header
• Fixed missing homeage title when auto_landing is disabled (#456)
• Fix TOC links taht have the same name and with non-ascii characters (#461)
• Fixed image embedding for confluence (#439)
• Reduced memory usage by lazy-loading all content and removing it from memory when finished (#443)

Miscellaneous

• Updated dependencies
• Removed HHVM from test matrix
• Removed PHP 5.5 support, minimum version is now 5.6