https://github.com/sigp/rust_beacon_chain/blob/6f0bbd47fac20652472c1ff5799aac367af5d929/src/state/transition/attestations.rs#L30-L37 This is blocked by #1.
https://github.com/sigp/rust_beacon_chain/blob/6f0bbd47fac20652472c1ff5799aac367af5d929/src/state/transition/attestations.rs#L30-L37
This is blocked by #1.