Document experiments. third one is a bit faster then the previous two but still slower than the Hash.
Document experiments. third one is a bit faster then the previous two but
still slower than the Hash.

Benchmarks of 200 times 52 insertions.

document1_200x2x26: 4.0546 wallclock secs @ 49.3263/s (n=200)
document2_200x2x26: 4.0599 wallclock secs @ 49.2623/s (n=200)
document3_200x2x26: 3.4230 wallclock secs @ 58.4281/s (n=200)
hash_200x2x26: 2.1539 wallclock secs @ 92.8556/s (n=200)

MARTIMM/BSON,lefth/BSON,lefth/BSON,MARTIMM/BSON