(x) CTL-197 Behaviors no longer handle logic in design mode so properties will never throw exceptions at design time
Updated EventTriggerBase and TriggerBase to handle no logic during design time as well
(x) CTL-198 Exception on FieldValidationResult.CreateError when validate formatting string contains braces
Updated history.txt for 3.7 release
Updated history.txt for next release
Updated version in AssemblyInfo to 3.8
Updated release steps
Fixed obsolete api calls in unit tests for version 3.8
First draft for Retry in exception handling.
Improvements in Exception Handling, Retry added, just unit tests and doc left.
Merge branch 'RetryHandling' of https://github.com/Catel/Catel into RetryHandling