Features

mj-include is now supports for head. Define a mj-head in another file, include it, and it will be added to the main MJML document (#367)
mj-include path is now relative to the file it is used in instead of the current working directory
The CLI now watches nested included files #333
The CLI now has an exit code thanks to @igalarzab
The aria-labelledby selectors were removed since THE Gmail update is now available for everyone
mj-text now supports letter-spacing and height thanks to @blaugueux & @rogierslag

Fixes