CHANGELOG.md in rails_state_machine-1.1.3 vs CHANGELOG.md in rails_state_machine-2.0.0

@@ -3,16 +3,26 @@
 
 This project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
 
+### Compatible changes
+
 ### Breaking changes
 
--
 
+## 2.0.0 2019-09-30
+
 ### Compatible changes
 
--
+- Added: State machine can now use an attribute other than `state` to represent the machine's state.
+- Added: It is now possible to define multiple state machines on the same model. States and event names
+  have to differ, though.
+
+### Breaking changes
+
+- Removed: Dropped support for adding a state machine to a model without including `RailsStateMachine::Model`.
+
 
 ## 1.1.3 2019-08-12
 
 ### Compatible changes