* 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
* provide validator with real keystore public key
* fmt
* build errors buildkite
* readd imports removed by goimport
* gazelle
* address broken tests
* make reference to filename a param
* fmt
* imports
* gazelle
* os remove all
* Use better Temp storage for tests
* testmain approach to avoid repeating expensive operation for each test
* travis lint
* fix test
* nokeystore in status test
* passing
* fix goimports
* WIP - with TODOs
* interface w/ test
* basic test for broadcast
* Add computeStateRoot funciton
* remove custody challenge
* resolve TODO lint issues
* more TODOs
* revert new line in types.proto
* broadcaster comment
* one of several failure condition tests
* Add test cases
* handle compute state error test case
* fix config in validator helpers
* fix tests too
* fix conflict
* partial PR feedback
* remove p2p
* gazelle
* package comment
* Better godoc
