Multiscalar multiplication

[burdges]

Would it be reasonable to do multiscalar multiplication? Or are downstream crates doing that with bititerators directly somehow?

There is relevant discussion around curve25519 for

• traits: hdevalence/curve25519-dalek@7ce6f90 Multiscalar multiplication with precomputation dalek-cryptography/curve25519-dalek#125
• algorithm choice: Pippenger multiscalar multiplication algorithm for very large inputs dalek-cryptography/curve25519-dalek#129