feat/snark composition #72

Job	Run time
Check Documentation	57s
Check Style	17s
Check (stable)	27s
Test assembly	49s
Test (stable)	28s
Check no_std	20s
Test (mnt4_753/)	1m 15s
Check (nightly)	28s
Test (nightly)	28s
List directories for parallelizing tests	6s
Test (cp6_782/)	47s
Test (mnt6_753/)	1m 12s
Test (./ed_on_bw6_761)	44s
Test (./ed_on_mnt4_753)	42s
Test (./secp256k1)	48s
Test (./secq256k1)	49s
Test (./grumpkin)	48s
Test (./vesta)	46s
Test (./pallas)	47s
Test (./bls12_381)	43s
Test (./bls12_377)	48s
Test (./mnt6_298)	48s
Test (./bn254)	48s
Test (./ed25519)	38s
Test (./ed_on_bn254)	42s
Test (./ed_on_bls12_381)	48s
Test (./ed_on_mnt4_298)	45s
Test (./ed_on_cp6_782)	44s
Test (./secp384r1)	37s
Test (./ed_on_bls12_381_bandersnatch)	47s
Test (./bw6_767)	38s
Test (./ed_on_bls12_377)	48s
Test (./bw6_761)	33s
Test (./secp256r1)	39s
Test (./mnt4_298)	47s
Test (./curve25519)	49s
	25m 20s

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