ImmutableArrays: next implementation step
Merge branch 'master' of https://github.com/bfh-evg/unicrypt

Conflicts:

src/main/java/ch/bfh/unicrypt/crypto/random/classes/PseudoRandomGenerato
rCounterMode.java

src/main/java/ch/bfh/unicrypt/math/algebra/additive/abstracts/AbstractEC
.java

src/main/java/ch/bfh/unicrypt/math/algebra/additive/classes/ECZModPrime.
java

src/test/java/ch/bfh/unicrypt/crypto/random/PseudoRandomGeneratorCounter
ModeTest.java