All Cache

Realisation of cache eviction algorithms (policies) with generics:

1. LRU eviction policy
2. Simplified 2Q eviction policy @see http://www.vldb.org/conf/1994/P439.PDF
3. Full 2Q eviction policy @see http://www.vldb.org/conf/1994/P439.PDF
4. MQ eviction policy @see https://www.usenix.org/legacy/events/usenix01/full_papers/zhou/zhou.pdf
5. LFU

TODO: 6. More tests 7. LFU with SizeCalculator