* Enforce error handling and checking type assertions
* Reference issue #5404 in the TODO message
* doc description
* Merge branch 'master' into errcheck
* fix tests and address @nisdas feedbacK
* gaz
* fix docker image
* add forked connMgr
* gaz
* add license header
* Merge branch 'master' of https://github.com/prysmaticlabs/geth-sharding into connMgr
* add conn manager test
* gaz
* fix connManager
* Merge branch 'master' of https://github.com/prysmaticlabs/geth-sharding into connMgr
* gaz
* remove todo
* add new dep
* lint
* lint
* lint
* space
* visibility
* Merge branch 'master' into connMgr
* Merge branch 'master' into connMgr
* Merge refs/heads/master into connMgr