fix: crc32 should not have byte order be platform dependent #49
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Previously, the crc32 (if enabled) was being calculated on different platforms according to different byte orderings, which meant that serialized byte streams including CRC which were serialized one one system would not properly deserialize on a system with a different byte order (or for which alpaca had defined a different byte order in crc32).
This PR updates it so that no matter what, the crc32 is always computed in little endian format.