merge because of groovy 2.2.2 experiment / pull request

Merge branch 'master' of https://github.com/miho/VRL
dont know why merge needed again
Merge branch 'master' of https://github.com/miho/VRL
merge
Merge branch 'master' of https://github.com/miho/VRL
Merge branch 'master' of https://github.com/miho/VRL
Merge branch 'master' of https://github.com/miho/VRL
Merge branch 'master' of https://github.com/miho/VRL
Merge pull request #37 from bsumirak/master

Null pointer exception in LoadFileStringType
fix for issue #13 : https://github.com/miho/VRL/issues/13

- we register a custom log handler that redicrects directly to the log window
Merge branch 'master' of github.com:miho/VRL
fix for issue #13 : https://github.com/miho/VRL/issues/13

- we register a custom log handler that redicrects directly to the log window
error handling improved
multithreading related improvements
vrl closes controlflow if elements are deleted (reconnect), api cleanup: arraylist -> list
vrl controlfow menu actions improved
workflow event support added:

- start & stop trigger abort-event wich can be handled by every canvas object by implementing the handle method (see javadoc)
workflow event support added:

- start & stop trigger abort-event wich can be handled by every canvas object by implementing the handle method (see javadoc)
start and stop
Merge branch 'master' of https://github.com/miho/VRL
1) variable declartion for multiple output added
2) TODO instanciate the variables
multiple output subelement array declaration bug fix