Added removing from the leaf that has at least n nodes where n is the tree orderd, and covered with a test.
Added printing of pruned alpabet tree.
Added removing from the leaf that has at least n nodes where n is the tree orderd, and covered with a test.
Inroduced removing from inner node that has key, but somehow broke a simple leaf deletion test. So checking in not to lose work.
Fixed the bug with index something flying past records array upper bound.
Added implementation and tests for deleting matched records from inner nodes (not root, not leaves).
Merge remote-tracking branch 'origin-base/master'
Merge pull request #4 from draganglumac/master

B-tree removing of matched records from inner nodes done and tests done. Remove 3/4 done. The only thing left is when key is not matched and child node or nodes are "too short".