- _() is no more installed in __builtin__
- instead, there is a new sat.core.i18n module
- added D_() method for deferred translation
- languageSwitch method allow to dynamically change translation language
- import gettext is tested against ImportError, and dummy methods are used when not available (mainly useful for Libervia)
- launchAction is now async, and return a dictionary for its result
- no more action_id, actionResult* are deprecated
- callback system is about to be unified
- params with a security greater than security_limit can not be modified
- special value: security_limit < 0 disable the check (all params can be modified)
- getParams, getParamsUI and getParamsForCategory have a security_limit parameter to filter
- parameters with security = 0 can be retrieved/modified from Libervia
