* API Implement InheritedPermission calculator
* API Rename RootPermissions to DefaultPermissionChecker
API Refactor inherited permission fields into InheritedPermissionExtension
API Introduce PermissionChecker interface
API Add HasRequestHandler interface
API Refactor Link() and url handling behaviour from Controller into RequestHandler
API RequestHandler classes now must define url_segment to have a default Link()
API Clean up redirectBack()
API Substitute Zend_Locale with Locale / NumberFormatter
API Substitute Zend_Date with IntlDateFormatter
API Added DBTIme::Nice12, FormatFromSettings
API Added Short() method to DBDate / DBTime / DBDatetime
API Add Date::getTimestamp()
API Added setSubmittedValue api for FormField
API Add second arg to base FormField::setValue()
API Major refactor of i18n into component data parts
API Implement Resettable interface to reset objects between tests
ENHANCEMENT Changed DBField::create_field return type to `static` to support better type hinting
ENHANCEMENT i18nTextCollector supports __CLASS__
