adding breton language
Updating months
Updating header (comments)
More tests, more translations
Update header
And more
Added mutations for years
Fixing indentation
Fixing indentation
Fixing indentation
Merge branch 'feature/breton'
Update br.js

Fixing broken test by escaping character
Use brackets to escape characters
Merge pull request #767 from jbleduigou/develop

Added support for breton language