* [New] Added before_read_file_meta and get_page_data plugin hooks to
customize page meta data
* [Changed] Make get_files() ignore dotfiles
* [Changed] Make get_pages() ignore Emacs and temp files
* [Changed] Use composer version of Markdown
* [Changed] Other small tweaks
* [Fixed] Date warnings and other small bugs
[New] Added ability to order pages by "alpha" or "date" (asc or desc)
[New] Added prev_page, current_page, next_page and is_front_page
template vars
[New] Added "Author" and "Date" title meta fields
[Changed] Added "twig_config" to settings
[Changed] Updated documentation
[Fixed] Query string 404 bug
