3.1.0

• [add] You can now configure which attributes are translated by default
• [add] Added the TwitterBootstrap3 framework
• [add] Add a second argument to Former::group that allows specifying which errors should be displayed
• [add] Add ability to interact with the Group's method by using onGroup{method} (ex: onGroupAddClass)
• [mod] All fields are now displayed as "raw" by default in custom groups
• [fix] Fix some checkable bugs