* Change math/rand to crypto/rand
* Change length
* Merge branch 'master' of github.com:prysmaticlabs/prysm into change-to-crypto-rand
* Change assignments to true random
* Merge branch 'master' into change-to-crypto-rand
* Change randomness
* Merge branch 'change-to-crypto-rand' of github.com:prysmaticlabs/prysm into change-to-crypto-rand
* Remove comments
* Test
* Fix test
* Merge refs/heads/master into change-to-crypto-rand
* Merge refs/heads/master into change-to-crypto-rand
* Merge refs/heads/master into change-to-crypto-rand
* Merge refs/heads/master into change-to-crypto-rand
* Merge refs/heads/master into change-to-crypto-rand
* Merge refs/heads/master into change-to-crypto-rand
* Merge refs/heads/master into change-to-crypto-rand
* Merge refs/heads/master into change-to-crypto-rand
* Merge refs/heads/master into change-to-crypto-rand
* Merge refs/heads/master into change-to-crypto-rand
* Merge refs/heads/master into change-to-crypto-rand
* checkpoint progress
* some more stuff
* fix tests
* fix tests
* lint
* fix test and initialization
* gaz
* Merge branch 'master' into updateP2PRPC
* Merge refs/heads/master into updateP2PRPC
* Merge refs/heads/master into updateP2PRPC
* Merge refs/heads/master into updateP2PRPC
* Merge refs/heads/master into updateP2PRPC
* Merge refs/heads/master into updateP2PRPC
* Merge refs/heads/master into updateP2PRPC
* Merge refs/heads/master into updateP2PRPC
* Merge refs/heads/master into updateP2PRPC
* Merge refs/heads/master into updateP2PRPC
* Disable some static analysis checks for coverage builds
* Merge branch 'master' into fix-coverage-builds
* disable lostcancel for third_party code
* Merge branch 'fix-coverage-builds' of github.com:prysmaticlabs/prysm into fix-coverage-builds
* Merge refs/heads/master into fix-coverage-builds
* A few lostcancel fixes
* Merge branch 'fix-coverage-builds' of github.com:prysmaticlabs/prysm into fix-coverage-builds
* Merge refs/heads/master into fix-coverage-builds
* implements weighted round robin in init-sync
* protection against evil peer
* reshuffle
* shorten flag
* deterministic order of wrr
* Merge branch 'master' into init-sync-wrr
* Merge refs/heads/master into init-sync-wrr
* Merge refs/heads/master into init-sync-wrr
* allow peers with the same capacity to pe selected at random
* Merge branch 'init-sync-wrr' of github.com:prysmaticlabs/prysm into init-sync-wrr
* adds wrr to e2e tests
* Merge refs/heads/master into init-sync-wrr
* Merge refs/heads/master into init-sync-wrr
* Merge refs/heads/master into init-sync-wrr
* refactors block fetching function to fetcher
* more comments fixed
* Merge branch 'master' into init-sync-optimizations
* moves helper code into separate file
* move test setup code to testmain
* removes bench