Pelican

* Replace `develop_server.sh` script with `pelican --listen`
* Improved copy/link behavior for large static files (e.g., videos)
* New `{static}` syntax to link to static content; content linked to by
`{static}` and `{attach}` is automatically copied over even if not in
`STATIC_PATHS`
* Pages can now have `draft` status
* Show current settings via new `--print-settings` flag
* New signals: `feed_generated` and `page_generated_write_page`
* Replace Fabric with Invoke and `fabfile.py` template with `tasks.py`
* New `ARTICLE_TRANSLATION_ID` and `PAGE_TRANSLATION_ID` settings to
specify metadata attributes used to identify/disable translations
* HTML reader now parses multiple occurrences of metadata tags as a list
* New Blogger XML backup importer
* Wordpress importer now updates file links to point to local copies if the
files were downloaded with `--wp-attach`.
* Many bug fixes, tweaks, and other enhancements

- Fix locale issues in Quickstart script
- Specify encoding for README and CHANGELOG in setup.py

- Atom feeds output `<content>` in addition to `<summary>`
- Atom feeds use `<published>` for the original publication date and
`<updated>` for modifications
- Simplify Atom feed ID generation and support URL fragments
- Produce category feeds with category-specific titles
- RSS feeds now default to summary instead of full content —
set `RSS_FEED_SUMMARY_ONLY = False` to revert to previous behavior
- Replace `MD_EXTENSIONS` with `MARKDOWN` setting
- Replace `JINJA_EXTENSIONS` with more-robust `JINJA_ENVIRONMENT` setting
- Improve summary truncation logic to handle special characters and tags that
span multiple lines, using HTML parser instead of regular expressions
- Include summary when looking for intra-site link substitutions
- Link to authors and index via `{author}name` and `{index}` syntax
- Override widget names via `LINKS_WIDGET_NAME` and `SOCIAL_WIDGET_NAME`
- Add `INDEX_SAVE_AS` option to override default `index.html` value
- Remove `PAGES` context variable for themes in favor of `pages`
- `SLUG_SUBSTITUTIONS` now accepts 3-tuple elements, allowing URL slugs to
contain non-alphanumeric characters
- Tag and category slugs can be controlled with greater precision using the
`TAG_SUBSTITUTIONS` and `CATEGORY_SUBSTITUTIONS` settings
- Author slugs can be controlled with greater precision using the
`AUTHOR_SUBSTITUTIONS` setting
- `DEFAULT_DATE` can be defined as a string
- Use `mtime` instead of `ctime` when `DEFAULT_DATE = 'fs'`
- Add `--fatal=errors|warnings` option for use with continuous integration
- When using generator-level caching, ensure previously-cached files are
processed instead of just new files
- Add Python and Pelican version information to debug output
- Improve compatibility with Python 3.5
- Comply with and enforce PEP8 guidelines
- Replace tables in settings documentation with `data::` directives