Änderungen

Summary

1. add filter and test for it (details)
2. fix (details)

Commit bfb90c6d7eef5b8fd6625318cab11f810287e767 by frotty add filter and test for it
	wurst/data/LinkedListTests.wurst (diff)
	wurst/data/LinkedList.wurst (diff)
Commit 2da7995982979487685b14497dc0db61427dbbca by frotty fix
	wurst/data/LinkedList.wurst (diff)