Transition error action not used per defined action

- Revert some previous changes order to define transition
  error action logic in a different place. Now basically
  wrapping try/catch in a dedicated action order to have
  separate error action per action as is expected by a config
  SPI.
- Added some tests.
- Added docs for transition error actions.
- Relates to #238
- Fixes #259

docs/src/reference/asciidoc/sm.adoc

@@ -160,6 +160,7 @@ expression based guard is a _SpelExpressionGuard_. This was attached to
 transition between states `S2` and `S3`. Both guard in above sample
 always evaluate to true.
 
+[[statemachine-config-actions]]
 === Configuring Actions
 Actions can be defined to be executed with transitions and states
 itself. Action is always executed as a result of a transition which
@@ -220,6 +221,27 @@ wrapped within a `Runnable` which may get cancelled via
 action, you need to be able to catch `InterruptedException` which is
 raised if task is cancelled.
 
+[[statemachine-config-actions-errorhandling]]
+==== Transition Action Error Handling
+
+User can always catch exceptions manually but with actions defined for
+transitions it is possible to define error action which is called if
+exception is reased. Exception is then available from a `StateContext`
+passed to that action.
+
+[source,java,indent=0]
+----
+include::samples/DocsConfigurationSampleTests.java[tags=snippetEC]
+----
+
+Similar logic can be done manually for every action if needed.
+
+[source,java,indent=0]
+----
+include::samples/DocsConfigurationSampleTests.java[tags=snippetED]
+----
+
+
 === Configuring Pseudo States
 
 _Pseudo state_ configuration is usually done by configuring states and
@@ -1583,6 +1605,12 @@ recognize only `StateMachineEvent` instances.
 include::samples/DocsConfigurationSampleTests.java[tags=snippet4]
 ----
 
+[TIP]
+====
+Actions defined for transitions also have their own error handling
+logic <<statemachine-config-actions-errorhandling>>.
+====
+
 [[sm-persist]]
 == Persisting State Machine
 Traditionally an instance of a state machine is used as is within a

docs/src/reference/asciidoc/whatsnew.adoc

@@ -30,5 +30,5 @@ _UML_ support and integrations with external config repositories.
 * New _Repository_ abstraction keeping machine configuration in an
   external repository <<sm-repository>>
 * New support for state actions. <<state-actions>>
-* New error action concepts.
+* New transition error action concepts.  <<statemachine-config-actions-errorhandling>>