1.3.0-beta

• MJML can now be used in a isomorphic environment !
• mj-raw tags should no longer parse incorrect tags, see #25
• Custom MJ Element with empty content or string content no longer make MJML crash, see #62
• mj-button default attributes has been updated to match other element, see #109 and #69
• max-width on mj-image has been removed see #86
• color is no longer inherited and see #105
• mj-social now have a padding between for text-mode false
• mjml cli supports i/o streams see #91