* Minimal attestation simplification
* minor fix
* Make the tests pass
* Decrease `PLACEHOLDER`, Use `compute_epoch_of_shard_slot`
* Fix proposer signature name and use get_seed() to calculate current_shuffling_seed
* Fix linter error
* Add the WIP `test_is_valid_shard_block`
* Add `get_shard_block_attester_committee`
* Simplified committee selection
* Added some helpers and simplified
* Update specs/core/1_shard-data-chains.md
* Update 1_shard-data-chains.md
* Simplified switchover epochs, changed block structure, changed crosslink structure
* Update 1_shard-data-chains.md
* Moved balance dependency to proposer selection
* Update specs/core/1_shard-data-chains.md
Co-Authored-By: Danny Ryan <dannyjryan@gmail.com>
* Update specs/core/1_shard-data-chains.md
Co-Authored-By: Danny Ryan <dannyjryan@gmail.com>
* Update specs/core/1_shard-data-chains.md
Co-Authored-By: Danny Ryan <dannyjryan@gmail.com>
* Update specs/core/1_shard-data-chains.md
Co-Authored-By: Danny Ryan <dannyjryan@gmail.com>
* Update specs/core/1_shard-data-chains.md
Co-Authored-By: Danny Ryan <dannyjryan@gmail.com>
* Update specs/core/1_shard-data-chains.md
Co-Authored-By: Danny Ryan <dannyjryan@gmail.com>
* Update specs/core/1_shard-data-chains.md
Co-Authored-By: Danny Ryan <dannyjryan@gmail.com>
* Update specs/core/1_shard-data-chains.md
* Fixed shard header flattening
* Update specs/core/1_shard-data-chains.md
* Minor fixes
* Update specs/core/1_shard-data-chains.md
* Update specs/core/1_shard-data-chains.md
Co-Authored-By: Hsiao-Wei Wang <hwwang156@gmail.com>
* cleanup testing and lint
* return none if not active validators in persistent committee
* only allow active validators as shard proposer
vbuterin