* 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
* polling interval
* adding proto message
* changing proto messages
* changing naming
* adding slot functionality
* initial sync working
* new changes
* more sync fixes
* its working now
* finally working
* add tests
* fix tests
* tests
* adding tests
* lint
* log checks
* making changes to simulator
* update logs
* fix tests
* get sync to work with crystallized state
* fixing race
* making requested changes
* unexport
* documentation
* gazelle and fix merge conflicts
* adding repeated requests
* fix lint
* adding new clock , db methods, and util func
* revert change to test
* gazelle
* add in test
* gazelle
* finally working
* save slot
* fix lint and constant
* adding proto messages
* adding fields
* adding new service
* new changes
* checking in file from syncFix
* fixing test
* add test
* adding to node
* goimports
* adding query service to sync services
* sync working
* finally works
* fix test
* lint
* fix build
* fix test
* begin with a block/state dag approach in prep for fork choice
* add TODOs for fork choice items, add data structure for forks
* remove syncing and processing states for incoming block sync
* simulator only broadcasts blocks now, no more state simulation
* fix sim tests, no more state sim
* bazel rerun
* naive fork choice
* split update head routine
* pesky race conditions
* fork choice rule works
* dag + fork choice working
* canonical head storage across sessions
* todo: save dag
* no more stalling after 10 blocks, using event feeds
* address review
* sync instead uses event feed
* refactored pure funcs into casper package
* tests pass
* fix lint
* refactor get blockhash
* refactor blockhashforslot
* event feed for incoming blocks in chainservice
* use config
* addressed all comments
* fix typo
* address yutaro comment
* using db interface
* check if parent hash in previous slot DAG
* works
* tests
* drop ffg suffix
* bazel gazelle
* full cov validators by height shard
* gazelle
* state tests
* all state tests
* 100% cov types and 99% cover casper
* cov up
* 80% blockchain cov
* fix lint
* Initial commit to extract initial sync code
* Add stop/resume of sync/intialsync
* bazel run
* gometalinter
* add tests
* cleanup
* build fixes
* use infof rather than errorf if sync is not in correct state
* Add TODO comment detailing eventual completion of transition from initial sync to sync
* fix build
* pr comments
* fix tests
* bump
