* persist light client updates
* update beacon chain to serve light client updates
* resolve todos
* cache best update
* extend cache parts
* is better light client update
* resolve merge conflict
* initial api changes
* add lc update db column
* fmt
* added tests
* add sim
* Merge branch 'unstable' of https://github.com/sigp/lighthouse into persist-light-client-updates
* fix some weird issues with the simulator
* tests
* Merge branch 'unstable' of https://github.com/sigp/lighthouse into persist-light-client-updates
* test changes
* merge conflict
* testing
* started work on ef tests and some code clean up
* update tests
* linting
* noop pre altair, were still failing on electra though
* allow for zeroed light client header
* Merge branch 'unstable' of https://github.com/sigp/lighthouse into persist-light-client-updates
* merge unstable
* remove unwraps
* remove unwraps
* Update light_client_update.rs
* merge unstable
* move functionality to helper methods
* refactor is best update fn
* refactor is best update fn
* improve organization of light client server cache logic
* fork diget calc, and only spawn as many blcoks as we need for the lc update test
* fetch lc update from the cache if it exists
* fmt
* Fix beacon_chain tests
* Add debug code to update ranking_order ef test
* Fix compare code
* merge conflicts
* fix test
* Merge branch 'persist-light-client-updates' of https://github.com/eserilev/lighthouse into persist-light-client-updates
* Use blinded blocks for light client proofs
* fix ef test
* merge conflicts
* fix lc update check
* Lint
* resolve merge conflict
* Merge branch 'persist-light-client-updates' of https://github.com/eserilev/lighthouse into persist-light-client-updates
* revert basic sim
* small fix
* revert sim
* Review PR
* resolve merge conflicts
* Merge branch 'unstable' into persist-light-client-updates
* fix lib.rs and tests.rs
* update decode.rs
* auto-delete in Cargo.lock
* delete milagro in cargo.toml
* remove milagro from makefile
* remove milagro from the name
* delete milagro in comment
* delete milagro in cargo.toml
* delete in /testing/ef_tests/cargo.toml
* delete milagro in the logical OR
* delete milagro in /lighthouse/src/main.rs
* delete milagro in /crypto/bls/tests/tests.rs
* delete milagro in comment
* delete milagro in /testing//ef_test/src//cases/bls_eth_aggregate_pubkeys.rs
* delete milagro
* delete more in lib.rs
* delete more in lib.rs
* delete more in lib.rs
* delete milagro in /crypto/bls/src/lib.rs
* delete milagro in crypto/bls/src/mod.rs
* delete milagro.rs
## Proposed Changes
Implement the consensus changes necessary for the upcoming Altair hard fork.
## Additional Info
This is quite a heavy refactor, with pivotal types like the `BeaconState` and `BeaconBlock` changing from structs to enums. This ripples through the whole codebase with field accesses changing to methods, e.g. `state.slot` => `state.slot()`.
Co-authored-by: realbigsean <seananderson33@gmail.com>
## Proposed Changes
Update test vectors for v0.12.3, and introduced configurable `proportional_slashing_multiplier`.
Also makes `YamlConfig` a bit safer by making every field access in `apply_to_chain_spec` explicit, and removing the `#[serde(default)]` attribute, which would instantiate missing fields to type defaults! Risky!
