Fixed .close() bug NPE with uninitialized fileOutputStream when in readOnly mode.
Testing BTree instantiation.
As of right now it appears to work.
Still works!
Able to retrieve root after construction.
BUG: Root always has 1 node, 2 children, and no grandchildren.
BUG: Root always has 1 node, 2 children, and no grandchildren.
Observation: The root appears to be a recently split node.