Release v3

Install/upgrade with: luarocks install luapress

Breaking changes:

• Rename config.index -> config.index_page
• Change CLI arg --nocache -> --no-cache

The rest:

• Add support for multiple (url, build_dir) environments
• Add config.force_index_page to create index form page even when posts exist
• Add config.sticky_page to have a page appear at the top of index
• Add config.archive_title to change the title of the archive page
• Add --watch command line to rebuild on changes to posts/ & pages/ (no Windows support :()
• Add ID attribute to <hX> tags in markdown lib
• Add $raw$...$/raw$ syntax to disable Markdown extras
• Add default config, so local config can be sparse
• Fix escaping for post & gallery RSS content
• Rename press.lua -> luapress.lua
• Remove alt_getopt and handle args manually
• Nicer (colored, where possible) terminal output