arnaucube f30ebf7b71 Update to last circomlib version ...

On a Intel(R) Core(TM) i7-8705G CPU @ 3.10GHz, with 32 GB of RAM:

- Before ff:
hash    time:   [927.61 us 927.78 us 927.98 us]

- Previous commit:
hash    time:   [26.495 us 26.503 us 26.512 us]

- New:
hash    time:   [9.8622 us 9.9953 us 10.127 us]

2020-09-30 23:19:50 +02:00

..

bench_mimc_hash.rs

Update to last circomlib version

2020-09-30 23:19:50 +02:00