* Add historical-slasher-node flag
* Fix build
* Remove useless flag
* Merge refs/heads/master into add-flasher-flag
* Merge refs/heads/master into add-flasher-flag
* Merge refs/heads/master into add-flasher-flag
* Fix flag
* Merge branch 'add-flasher-flag' of github.com:prysmaticlabs/prysm into add-flasher-flag
* Add flags to beacon chain
* Merge refs/heads/master into add-flasher-flag
* Merge refs/heads/master into add-flasher-flag
* Merge refs/heads/master into add-flasher-flag
* Merge refs/heads/master into add-flasher-flag
* Merge refs/heads/master into add-flasher-flag
* Merge refs/heads/master into add-flasher-flag
* Merge refs/heads/master into add-flasher-flag
* Merge refs/heads/master into add-flasher-flag
* Merge refs/heads/master into add-flasher-flag
* Merge refs/heads/master into add-flasher-flag
* Merge refs/heads/master into add-flasher-flag
* Merge refs/heads/master into add-flasher-flag
* Merge refs/heads/master into add-flasher-flag