# 1.0.0

* (troessner) Only support ruby 2.1 and 2.2.

# 0.2.1

* (ozydingo / Andrew Schwartz) Don't use ActiveModel#has_attribute? since this adds the attribute name to self.attribute_names

# 0.2.0

* (troessner) Fix missing explicit returns in our callback handling
* (Lee Henson) add can_execute_event? to check against guard clauses
* (Randy Schmidt / r38y) Make reading state work for non-AR models.

# 0.1.13

* (Nathan Amick and Ryan Long) Allow passing non-Proc callables as guards
* (troessner) Bugfixes, Refactorings and documentation improvements

# 0.1.12

* (troessner) Fix issue 107: timestamps are updated even if guard fails.

# 0.1.10

* (troessner) Fix: Using a custom ActiveRecord select query without the name of the state attribute would trigger an exception.

#  0.1.9

* (barelyknow) add can_transition? and cant_transition? methods
* (barelyknow) add available_events method to class with state machine
* (Sean Devine) fire enter on create
* (jotto) change scopes to use proc so it works in rails 3 and 4

# 0.1.8

* (phillipp | Phillipp Röll) Fixes a wrong select for scopes if the state machines attribute_name is set to something other than the default

# 0.1.7

* (cmw) Better prevention of name clashes when creating initializer methods

# 0.1.6

* (troessner) Revert 'Fixing set_initial_state with Mongoid' because of https://github.com/troessner/transitions/issues/76
* (divins) Multiple success callbacks
* (cstrahan) Pass additional args to guard function
* (cmw) Support for configurable column names

# 0.1.5

* (troessner) Fix unhelpful error message when event can not be fired.
* (simonc) Fixing set_initial_state with Mongoid

# 0.1.4

(troessner)

* Raise exception if we try to overwrite existing instance methods when defining state predicate methods
* Improve exception message if we try to overwrite existing class methods when ActiveRecord scopes

# 0.1.3

(troessner) Make sure `empty?` works on symbols.

# 0.1.2

(troessner) Slightly improved handling of current states.

# 0.1.1

* (troessner) Remove feature:
                `Do not override existing methods when defining state query methods but warn the user.`
              since this turned out to cause some problems when loading models, see
              https://github.com/troessner/transitions/issues/62 for details.
* (bnmrrs) Add helper methods to check if a given transition is possible.

# 0.1.0

(troessner) Remove suppport for multipe state machines

Here is the reasoning:

1.) If you really need multiple state machines for one model, you probably need multiple models.
    So far, I have not seen a valid use case for multiple state machines, which was not better expressed
    by using multiple models.

2.) The current transitions semantics and  API is not suited for multiple state machines:
    Right now events are just plain methods defined on the models itself.
    Consider you had multiple state machines, on named `day` and one named `night`, both with differing events.
    What to do when you switch to state machine `day` but trigger an event defined on `night`?
    You can either allow it, but this would make multiple state machines pointless if there is no enforced
    separation of concerns. Or you disallow it, in which case `events` would either have to be bound
    to state machines, not to the object itself, which would be tedious and ugly, or the `events` themselves
    would need to check if they are allowed to be called. The last solution seems like a clean solution
    but it would require a decent amount of rewriting existing code - and I just do not see the benefit for this.

3.) Kind of a weak point, but right now the functionality is broken anyway throughout the gem. This functionality
    is not even documented, so the side effects on existing projects should be minimal.

On the plus side, removing the possibility of having multiple state machines will streamline and improve existing
code a lot.

# 0.0.18 (2012-05-18)

* (troessner) Remove `define_state_query_method` from public API
* (troessner) Do not override existing methods when defining state query methods but warn the user.

# 0.0.17 (2012-05-02):

* (zmillman) Add write_state_without_persistence.

# 0.0.16 (2012-04-18):

* (mperham) Remove backports, fix Ruby 1.8 support.

# 0.0.15 (2012-04-17):

* (troessner) Ensure ruby 1.8.7 compatibility.

# 0.0.14 (2012-04-16):

* (troessner) Improve error messages for invalid transitions.