Co-authored-by: Sun <huachuang20@gmail.com>

Co-authored-by: Pratyush Mishra <pratyushmishra@berkeley.edu>

Co-authored-by: Pratyush Mishra <pratyushmishra@berkeley.edu>

* Fix Bls12-377 scalar group generator

Previously we used 11 as a generator, which has order (p-1)/35.

Now we use 22, which has the right order.

Fixed the two-adic root of unity in accordance with the new generator.

fixes #47

* add the CHANGE LOG

Co-authored-by: weikeng <w.k@berkeley.edu>