Implement BITFIELD #247
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Implement BITFIELD #247
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One less command missing 馃榿
Note: this is not the most optional implementation, as writes are written bit by bit, needing up to 64 writes. However this was done in the name of simplicity, specially considering how messed up is the overflow detection on the original REDIS codebase: https://github.com/redis/redis/blob/unstable/src/bitops.c#L288 (which here is contains a ton of modular arithmetic manipulation in order to make it compatible).