I knew early on that `integeruniquer.index` could be used to index into `integeruniquer.data`, but I initially thought it was an optimization rather than a necessity. It seems like if there's data past the 1MB threshold in `integeruniquer.data`, then `integeruniquer.index` is actually quite useful.
The file seems to contain `[byte offset, MB offset]` pairs encoded as two 32 bit unsigned little endian integers. Using that to decode the integer arrays encoded in `integeruniquer.data` allows the file in #63 to load.
Fixes#63
aaac0ad7e3