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merge errors
I MADE SOME MAJOR CHANGES. The file representations of the nodes and indices are now BufferedReaders, since we don't need to binary search through them. However, I still need to read the header info, so I overloaded the readHeader method in FileSearch to also be able to take in BufferedReader. Reading and converting the files now works, however, inserting the nodes into the KD tree is taking prohibitively long.