* standardize endianness to "big"
* slot.encode()
* include coin nonce in leader election VRF
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Co-authored-by: David Rusu <davidrusu@Davids-MacBook-Pro.local>
* Add epoch transition to spec
* add tests
* Add block to fork after validation
* Add configs for steps inside an epoch
* rename get_last_valid_state to state_at_slot_beginning