version 0.5.0

• support mongoid #2

v0.4.1

• fix wrong error message for invalid states
• fix readme for activerecord integration
• delete unneeded constant in Jsm::Callbacks::Chain
• refactor memoization

V0.4.0

• add event callbacks feature

v0.3.0

• Add StateMachine Visualization using Graphviz

v0.2.0

• support initial state

v0.1.0

• Initialization
• support state machine for plain ruby
• support state machine for active model
• support state machine for active record