* add fork choice helpers
* LMD GHOST basic implementation
* add todos
* add in the initial test and finalize rest of functions
* added tests
* more simulation, adding trivial case with only one option for a head
* panics
* begin helper function tests
* more helper tests
* higher vote wins
* LMD Ghost full test
* comment
* add types
* optimize
* prepared
* deposits for chain
* lint
* use the hash beacon block util
* rem unnecessary db methods
* comments
* setup works
* first commit, remote att types
* no more agg attestation proto
* regen mock
* only attestations
* proto
* att process
* fix att references
* more tests passing
* use att protos
* complete
* change visibility
* use gogoprotobu
* first commit, remote att types
* no more agg attestation proto
* regen mock
* only attestations
* proto
* att process
* fix att references
* more tests passing
* use att protos
* complete
* Update dependency com_github_deckarep_golang_set to v1 (#1159)
* Update dependency com_github_edsrzf_mmap_go to v1 (#1160)
* Update dependency com_github_go_stack_stack to v1 (#1161)
* Update dependency com_github_rs_cors to v1 (#1162)
* Update dependency in_gopkg_urfave_cli_v1 to v1 (#1163)
* change visibility
* refactor repo to use protos
* removed block successfully in types
* db package updated
* db, core passing
* chain service done
* no more block instances
* all pass
* deprecate all block protos
* tests pass