Exception handling when running steps #65
Description
Most methods executed by step runners can raise a exceptions. Until now this was handled within those methods, but it has proven itself to be quite cumbersome. It's quite easy to forget to properly wrap a method invocation with a try-catch and thus allowing for an issue in a single step to fail a whole blueprint. Also - that's quite a boilerplate-heavy solution.
As a potential solution - exceptions would be handled in the orchestrating BlueprintRunner.php, thus "globally" protecting the execution flow, with no need for extra boilerplate and no risk of exception-leakage.