-Added: Eclipse Plugin in gradle
-Refactored: KEY & VALUE conversions got refactored a bit to be more consistend and more useable. (It's not perfect)
-Added: AbstractMap
-Added: Tests for IntSortedSet, IntNavigableSet.
-Added: Test Classes for: Open/Custom/Linked HashSet, TreeSets, ArraySet
-Changed: MemFreeMergeSort got improved by a lot.
-Fixed: Bugs that the tests uncovered.
-Note: TreeSets still have issues. But every other collection type is fixed.