February 11, 2015 Release
Various adjustments to analytics: tracking expression rendering time and JS errors
Escape sequences that match to a specific character now display their hexadecimal code (actually done on January 25, but I forgot to update the changelog)
Fixing styling issue with header links (see GitHub issue)
December 30, 2014 Release
Fixing bug that prevented rendering empty subexpressions
Fixing minor styling bug when permalink is disabled
Cleaning up some duplicated styles and JS
December 29, 2014 Release
Tweaking analytics data to help with addressing issues in deployed code (work will likely continue on this)
Added progress bars on the documentation page
Removed the loading spinner everywhere
Animated the progress bars
December 26, 2014 Release
Freshened up design
Multiline regular expression input field (press Shift-Enter to render)
Added a changelog
Added documentation
All parsing and rendering happens client-side (using Canopy and Snap.svg)
Added Download link (not available in older browsers)
Added display of regular expression flags (ignore case, global, multiline)
Added indicator of quantifier greedy-ness
Various improvements to parsing of regular expression
Rendering of a regular expression can be canceled by pressing Escape