CodeMirror 3.19
Standardized param names as camelCase.
Updated to CodeMirror 3.20
Using the loadmode addon to load modes in JS, no more mode loading in PHP!
Google Web Font info moved to json data file. Easier to update in case new web fonts are added (rumor has it that Fira is coming soon).
No longer minifying or combining mode files. It just wasn't worth the effort.
Passes PHPCS
Wrong CM version in the description
CodeMirror 3.21
Codemirror 3.22 - see release notes at codemirror.net
Use multiplexing addon.
CodeMirror 4.0 - multiple selections and other goodies
bigger default font size (13) and support for legacy fullscreen key combo
CodeMirror 4.1
CodeMirror 4.2
New font option: Fira Mono
CodeMirror 4.3