* log error for metric
* reuse epoch e
* Better node comments
* Remove not needed breaks
* Use j over i
* Merge branch 'master' of github.com:prysmaticlabs/prysm into best-practice-pt1
* Descendent/Descendant
* Merge refs/heads/master into best-practice-pt1
* Update beacon-chain/forkchoice/protoarray/nodes.go
* Merge refs/heads/master into best-practice-pt1
* Merge refs/heads/master into best-practice-pt1
* Functions that are to be moved to //shared/htrutils captured in separate file.
* Move files into new //shared/htutils package
hash_function.go renamed to hashers.go
* Refactor to reference moved methods in new package
- Added import for htrutils to state and stateutil packages
- Update references to imported funcs (append "htrutils.")
- Updated funcs in htrutils to be exported where necessary
* Add tests