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

* Fixed benchmarking compile error

* Updated CHANGELOG

* patch `algebra-test-templates` due to breaking changes since the last release

Co-authored-by: Marcin Górny <marcin.gorny.94@protonmail.com>

* implementation of the fast subgroup check for bls12_381

* add a bench

* subgroup check for g1

* subgroup check modifications

* remove useless test

* fmt

* need the last version of arkworks/algebra

* remove Parameters0

* using projective points is more efficient

* use of projective coordinates in G2

* fmt

* documentation on the constants and the psi function

* references for algorithms of eprint 2021/1130

* fmt

* sed ^ **

* minor improvement

* fmt

* fix Cargo toml

* nits

* some cleanup for g1

* add the beta test back

* fmt

* g2

* changelog

* add a  note on the Cargo.toml

* nits

* avoid variable name conflicts

* add the early-out optimization

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

* impl bandersnatch

* clean up

* update changelog

* Relocate the readme so they show up in the doc

* Delete README.md

* Relocate the changelog entry

* rename & fmt

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

* fix ed-mnt4-753

* update CHANGELOG

* Upgrade to test-templates from algebra

* Fix Cargo.toml

* Fix search and replace

* Update

* Fix cargo tomls

Co-authored-by: Ying Tong Lai <yingtong@electriccoin.co>
Co-authored-by: Daira Hopwood <daira@jacaranda.org>
Co-authored-by: Pratyush Mishra <pratyushmishra@berkeley.edu>
Co-authored-by: therealyingtong <yingtong@z.cash>