13116 ----- - Issue 3892: clean AbstractHierarchicalList. - Issue 3899: clean up #maybeDuplicateMorph:. - Issue 3888: Move Digital Signatur code to System-Hashing package. - Issue 3898: Remove some dead code from PasteUpMorph. - Issue 3779: isUnicodeStringWithCJK returns false on a string containing Kanji Stef