== master

== 0.3.0 / 2008-09-07

* No longer allow additional arguments to be passed into event actions
* Add support for can_#{event}? for checking whether an event can be fired based on the current state of the record
* Don't use callbacks for performing transitions
* Fix state machines in subclasses not knowing what states/events/transitions were defined by superclasses
* Replace all before/after_exit/enter/loopback callback hooks and :before/:after options for events with before_transition/after_transition callbacks, e.g.
  
  before_transition :from => 'parked', :do => :lock_doors # was before_exit :parked, :lock_doors
  after_transition :on => 'ignite', :do => :turn_on_radio # was event :ignite, :after => :turn_on_radio do
  
* Always save when an event is fired even if it results in a loopback [Jürgen Strobel]
* Ensure initial state callbacks are invoked in the proper order when an event is fired on a new record
* Add before_loopback and after_loopback hooks [Jürgen Strobel]

== 0.2.1 / 2008-07-05

* Add more descriptive exceptions
* Assume the default state attribute is "state" if one is not provided
* Add :except_from option for transitions if you want to blacklist states
* Add PluginAWeek::StateMachine::Machine#states
* Add PluginAWeek::StateMachine::Event#transitions
* Allow creating transitions with no from state (effectively allowing the transition for *any* from state)
* Reduce the number of objects created for each transition

== 0.2.0 / 2008-06-29

* Add a non-bang version of events (e.g. park) that will return a boolean value for success
* Raise an exception if the bang version of events are used (e.g. park!) and no transition is successful
* Change callbacks to act a little more like ActiveRecord
* Avoid using string evaluation for dynamic methods

== 0.1.1 / 2008-06-22

* Remove log files from gems

== 0.1.0 / 2008-05-05

* Completely rewritten from scratch
* Renamed to state_machine
* Removed database dependencies
* Removed models in favor of an attribute-agnostic design
* Use ActiveSupport::Callbacks instead of eval_call
* Remove dry_transaction_rollbacks dependencies
* Added functional tests
* Updated documentation

== 0.0.1 / 2007-09-26

* Add dependency on custom_callbacks
* Move test fixtures out of the test application root directory
* Improve documentation
* Remove the StateExtension module in favor of adding singleton methods to the stateful class
* Convert dos newlines to unix newlines
* Fix error message when a given event can't be found in the database
* Add before_#{action} and #{action} callbacks when an event is performed
* All state and event callbacks can now explicitly return false in order to cancel the action
* Refactor ActiveState callback creation
* Refactor unit tests so that they use mock classes instead of themselves
* Allow force_reload option to be set in the state association
* Don't save the entire model when updating the state_id
* Raise exception if a class tries to define a state more than once
* Add tests for PluginAWeek::Has::States::ActiveState
* Refactor active state/active event creation
* Fix owner_type not being set correctly in active states/events of subclasses
* Allow subclasses to override the initial state
* Fix problem with migrations using default null when column cannot be null
* Moved deadline support into a separate plugin (has_state_deadlines).
* Added many more unit tests.
* Simplified many of the interfaces for maintainability.
* Added support for turning off recording state changes.
* Removed the short_description and long_description columns, in favor of an optional human_name column.
* Fixed not overriding the correct equality methods in the StateTransition class.
* Added to_sym to State and Event.
* State#name and Event#name now return the string version of the name instead of the symbol version.
* Added State#human_name and Event#human_name to automatically figure out what the human name is if it isn't specified in the table.
* Updated manual rollbacks to use the new Rails edge api (ActiveRecord::Rollback exception).
* Moved StateExtension class into a separate file in order to help keep the has_state files clean.
* Renamed InvalidState and InvalidEvent exceptions to StateNotFound and EventNotFound in order to follow the ActiveRecord convention (i.e. RecordNotFound).
* Added StateNotActive and EventNotActive exceptions to help differentiate between states which don't exist and states which weren't defined in the class.
* Added support for defining callbacks like so:
  
  def before_exit_parked
  end
  
  def after_enter_idling
  end

* Added support for defining callbacks using class methods:
  
  before_exit_parked :fasten_seatbelt

* Added event callbacks after the transition has occurred (e.g. after_park)
* State callbacks no longer receive any of the arguments that were provided in the event action
* Updated license to include our names.