Moving transform function to Util class. Update tests.
Merge branch 'master' of https://github.com/nulleof/NSU13222

Conflicts:
	src/main/java/NSU13222/PersistentDLList.java
	src/main/java/NSU13222/PersistentHashMap.java
	src/main/java/NSU13222/PersistentVector.java