* fatal if impossible to receive chainstart
* fix tests
* fix
* custom delay
* completed custom delay
* errors
* better logs, nothing at genesis
* use demo in val
* add gazelle
* log
* starting to log stuff
* pass in ops
* avoid printing the large #s for debug, still working on tests..
* all around better logging
* fixed build error in epoch process
* fixed state transiton tests
* fixed block tests
* lint
* verify sigs in randao
* ready for inclusion falg
* only print waiting when slot is not valid
* fix build
* mod config
* fixed last justified slot issue
* fix inclusion
* fixed attestation issue
* using zero hash from params instead
* fix tests
* update balance
* removed swp
* more `- genesis_slot` for logs
* rem unused log
* fix broken tests
* account for skip slots in state root computation
* fixes done
* validator guide bug fixes - 671
* epoch boundary at the last slot of the epoch
* fix epoch issue
* more balance cal logs for debugging
* greater balance
* attestaton fixes
* fixes
* addressed testrun
* fixed ejection balance
* fix tests with far future epoch
* revert sync change
* revert initial sync change
* fix changes
* off by one att fix
* revert the att fix
* address comments
* format
* fix build
* rem file
* begin using tree hash instead of hash for state and blocks
* replace with ssz
* rem references to vote cache
* replace all instances of state/block hash with root
* goimports
* almost every test in the world fails
* goimports
* all tests pass, tree hash across repo
* fix bug in eth1 data vote count increases
* updating attester slashings
* is double vote and attester pseudocode
* attester slashing revamp complete
* exits processing complete
* all block operations aligned to spec
* completed test revamp
* builds properly
* all done FINALLY
* deprecate all instances of old randao logic
* fix all broken tests and cleanup randao references across repo
* builds but tests failing
* fixing broken chaintests
* only chaintests fail now
* randao fully updated
* add bls todo
* lint
* travis
* fix unresolved property in struct
* remove used randao var
* initialize beacon state separately
* extracting out testcase into another func
* creating function for simulated objects
* creating simulated object struct
* final clean up
* documentation
* lint
* adding chain advancer
* review comments
* replacing lib
* adding initialization for chain and new vars in struct
* added func
* fixing tests and all other bugs
* fixing tests
* docs
* adding a new nil block function
* adding test
* remove check for nil blocks
* godoc
* fixing merge conflicts, tests
* fix test
* 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
