* attestationutil.AttestingIndices: Minor improvement on indices array allocation
* progress
* more progress on makes
* progress
* more progress
* Merge branch 'master' of github.com:prysmaticlabs/prysm into memory1
* gaz
* fmt and imports
* Merge branch 'master' into memory2
* Min()
* remove spaces
* Merge branch 'master' of github.com:prysmaticlabs/prysm into memory2
* revert beacon-chain/operations/attestations/kv/block.go
* partially revert beacon-chain/operations/attestations/kv/aggregated.go
* Merge branch 'master' into memory2
* Merge branch 'master' into memory2
* sort out new blocks
* add unit test
* Merge refs/heads/master into sortDuplicates
* victor's review
* Merge branch 'sortDuplicates' of https://github.com/prysmaticlabs/geth-sharding into sortDuplicates
* Merge refs/heads/master into sortDuplicates