2019-01-07: Version 0.5:
------------------------

 - added support to tag files with [tag:...] and [taglist] for a list
   of all tagged pages
 - added support for blog entries. Use page attribute "blog-date:" to
   mark pages as blog entry. Use [blog-overview], [blog-list], and
   [blog-nav] to get the latest entries, a list of entries, and
   navigation links per entry.

2016-07-16: Version 0.4:
------------------------

 - added {menu_toplevel} and {menu_submenu} for submenu separation
 - added config option "separate_submenu". When set to True,
   it will include the toplevel menu entry in the submenu again and always
   highlight the toplevel entry.
 - added group.txt file to have a separate menu of groups
 - changed some css elements from id to class type
 - added a cache for thumbnails to avoid recreation every time the output is
   generated
 - added option to validate the output with tidy
 - added verbose option so that some output is only shown if option is
   enabled
 - added optional depth limit for toc
 - added option to sign generated files with gpg

2014-03-06: Version 0.3:
------------------------

 - added support for anchor links ([#...])
 - added bold and underline text formatting ( *...* and _..._ )
 - added support for replacing special characters
 - added optional header numbering by using file header line "number_headings: yes"
 - added feature to insert a table of content ([toc])
 - added option to remove stale files in output directory (-d option)

2014-02-19: Version 0.2:
------------------------

 - first public release
