Commit b57c4585 authored by Svyatoslav Nikolsky's avatar Svyatoslav Nikolsky Committed by Gav Wood

GRANDPA finality proof draft (#1268)

* grandpa finality proof

* prove GrandpaApi::grandpa_authorities using parent block + some docs

* create justification when consensus data is changed

* generate justifications periodically

* test for ConsensusChanges
parent 7c9fa48c
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