src/main/java/com/spotify/sparkey/IndexHash.java (2 lines):
	- line 491: // TODO: possibly optimize this to read and write stuff to move in chunks instead of one by one, to decrease number of seeks.
	- line 629: // TODO: skip the address < address2 - only useful for generating deterministic hash tables


src/main/java/com/spotify/sparkey/AddressSize.java (1 line):
	- line 51: data.writeInt((int) address); // TODO: overflow?