Add .gitignore file
Documentation cleanup. Fixes #12. Fixes #13. Fixes #15.
Use short form of hex color code, fixes #17.
Add filter for line classes, fixes #18.
Fix lines_start counting bug, fixes #21.
Refactor render() method into two additional protected methods, fixes #14
Make file-level docblocks easier to read.
Add note about WordPress version requirements.
Add note about highlighting class

fixes #16
Changed the version to a revision since we don't have any features planned at the moment.
Moved the filter to its own line for better readability and it wasn't actually being assigned to a variable. It also allows us to ensure the returned value is an array.
Tweaks to the readme.
Improved i18n, added/corrected German translations, added/corrected .pot file -- all in dev branch
Merge pull request #24 from deckerweb/dev

Improved i18n, added/corrected German translations, added/corrected .pot...
Refactor shortcode() method into two additional protected methods.
Improved documentation and type hints.
Before this patch, the final line of code was ending up as </pre</pre> as not enough characters were getting stripped away before exploding into individual lines.
Add support for namespaced Gists.
Rename to GistPress and update to parse changes in Gist HTML.
Update the readme.