Instead of using `*.config.php` files, use `*.yml` files to configure Pico. YAML is much easier to understand, more user friendly and (at least a bit) more error-tolerant, but still very powerful. Don't break BC by letting `PicoDeprecated` still read `config/config.php`.
* [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