* core: make block justification optional
* runtime: update wasm binaries
* core: optionally pass justification on finalize_block
* finality-grandpa: add channel to trigger authority set changes
this will allow the `BlockImport` to trigger an authority set change when
importing a change block that provides a justification (when syncing)
* finality-grandpa: move finalize_block to free function
* finality-grandpa: add GrandpaOracle for auth set liveness checking
this will be used by `BlockImport` to check whether the authority set for a
given block is still live, if the authority set isn't live then importing a
change block requires a justification.
* finality-grandpa: store justification on finalized transition blocks
* finality-grandpa: check justification on authority set change blocks
* finality-grandpa: poll grandpa liveness oracle every 10 seconds
* finality-grandpa: spawn grandpa oracle in service setup
* core: support multiple subscriptions per consensus gossip topic
* finality-grandpa: create and verify justifications
* finality-grandpa: update to local branch of grandpa
* finality-grandpa: update to finality-grandpa v0.5.0
* finality-grandpa: move grandpa oracle code
* finality-grandpa: fix canonality check
* finality-grandpa: clean up error handling
* finality-grandpa: fix canonical_at_height
* finality-grandpa: fix tests
* runtime: update wasm binaries
* core: add tests for finalizing block with justification
* finality-grandpa: improve validation of justifications
* core: remove unused IncompleteJustification block import error
* core: test multiple subscribers for same consensus gossip topic
* Revert "finality-grandpa: improve validation of justifications"
This reverts commit 51eb2c58c2219801e876af6d6c9371bdd9ff2477.
* finality-grandpa: fix commit validation
* finality-grandpa: fix commit ancestry validation
* finality-grandpa: use grandpa v0.5.1
* finality-grandpa: add docs
* finality-grandpa: fix failing test
* finality-grandpa: only allow a pending authority set change per fork
* finality-grandpa: fix validator set transition test
* get compiling with latest version of grandpa
* generalize UntilImported to prepare for waiting for commit message targets
* extract until_imported out to own module
* logic for blocking commits until enough blocks imported
* add tests for commit message blocking logic
* pass through commit mesage round number as well
* extract communication streams to own module
* add Error implementation for ExitOrError
* introduce stream adapter for checking commit messages
* output sink for commits
* implement the unimplemented
* remove extra line
* update to latest version of grandpa api
* update finality-grandpa to 0.4.0
* Use filter_map earlier when checking incoming commits messages
Co-Authored-By: rphmeier <rphmeier@gmail.com>
* address some grumbles
André Silva