Merge remote-tracking branch 'origin/rh-expand-pov-distribution' into prgn-implement-statement-gossip

This caused a merge conflict where suddenly the Bytes type was undefined, somehow. Oh well??

* add signed wrapper, typedef SignedStatement

* typedef SignedAvailabilityBitfield

* implement Signed wrapper

This is strictly an addition as of this commit; nothing is yet
changed in existing behavior.

* inline getters, remove review comment

* move EncodeAs, Signed from node::primitives to primitives::parachain

* Refactor SignedAvailabilityBitfield to use Signed

* don't double-encode real payload

This isn't an ideal solution, because it depends on the
implementation details of how SCALE encodes tuples, but OTOH
that behavior seems unlikely to change anytime soon.

* fix build errors

* cause the runtime to build properly with the new changes

Not sure why cargo check didn't catch this earlier; oh well.

* fix runtime tests and separate SignedStatement from SignedFullStatement

* better explain why CompactStatement exists

Co-authored-by: Robert Habermeier <[email protected]>

Co-authored-by: Robert Habermeier <[email protected]>

* Add mdbook-linkcheck

* Convert todo to not a link

* Fix external glossary link

* Fix various broken links

* Mass replace: s/.html/.md/

* My sloppy attempt to add a gitlab CI check

* Don't label insubstantial PRs 'pleasereview'

* Update auto-label-prs.yml

* Update auto-label-prs.yml

Bugfix release, see [CHANGELOG].

[CHANGELOG]: https://github.com/libp2p/rust-libp2p/blob/master/protocols/ping/CHANGELOG.md

* add availability bitfield types to primitives

* begin inclusion module

* use GitHub issue link for limitation

* fix some compiler errors

* integrate validators into initializer

* add generic signing context

* make signing-context more generic

* fix issues with inclusion module

* add TODO

* guide: add validators and session index to inclusion

* guide: add session index to change notification

* implement session change logic

* add BackedCandidate type

* guide: refine inclusion pipeline

* guide: rename group_on to group_validators

* guide: add check about collator for parathread

* guide: add last_code_upgrade to paras and use in inclusion

* implement Paras::last_code_upgrade

* implement most checks in process_candidates

* make candidate receipt structs more generic

* make BackedCandidate struct more generic

* use hash param, not block number

* check that candidate is in context of the parent block

* include inclusion module in initializer

* implement enact-candidate

* check that only occupied cores have bits set

* finish implementing bitfield processing

* restructure consistency checks on candidates

* make some more primitives generic

* signature checking logic for backed candidates

* finish implementing process_candidates

* implement collect_pending

* add some trait implementations to primitives

* implement InclusionInherent and squash warnings

* test bitfield signing checks

* rename parachain head to para_head

* fix note_new_head bug in paras

* test bitfield enactment in inclusion

* helpers for candidate checks

* add test for most candidate checks

* add test for backing setting storage

* test session change logic

* remove extraneous type parameter

* remove some allow(unused)s

* extract threshold computation to const fn

* remove some more allow(unused)s

* improve doc

* add debug assertion

* fix primitive test compilation

* tag unanimous variant as unused

* Router module initial commit

* Add the router.md itself

* Enqueue only on enact_candidate

* Initialization concerns

* Ignore the snippet

* Update roadmap/implementors-guide/src/runtime/router.md

Co-authored-by: Robert Habermeier <[email protected]>

* Dispatch messages on finalization

* More fixes from review

* Update roadmap/implementors-guide/src/SUMMARY.md

Co-authored-by: Robert Habermeier <[email protected]>

* Adds router to initializer order

* Adds messages.md

Co-authored-by: Robert Habermeier <[email protected]>

* Bump trie-db

* Bump substrate

* fix all runtimes and add test'

* Fix build

* Undo changes to lock file?

* Fix runtime test

* Remove unused imports

* cargo update -p sp-io

* Update Cargo.lock

* bump spec version

Co-authored-by: Shawn Tabrizi <[email protected]>

* introduce polkadot-node-primitives

* guide: change statement distribution message types

* guide: remove variant from `CandidateSelectionMessage`

* add a few more message types

* add TODOs

* Almost all messages

* NewBackedCandidate notification

* Formatting

* Use AttestedCandidate as BackedCandidate

* Update node/primitives/src/lib.rs

Co-authored-by: Peter Goodspeed-Niklaus <[email protected]>

* Fix the tests

* Bring in types from #1242

* Adds network bridge messages

* More message types from doc

* use fn pointer type

* Fixes from the review

* Add missing Runtime subsystem message

* rename to CandidateValidationMessage and fix tests

Co-authored-by: Fedor Sakharov <[email protected]>
Co-authored-by: Peter Goodspeed-Niklaus <[email protected]>

* types chapter & candidate types

* Factor out some message types

* backing and availability types.

* spacing

* finish thought

* info on signed payloads

* update links

* explicit wrapper types

* add remaining message types

* add runtime API subsystem

* adjust language

* tweak candidate validation message

* find homes for some misfit types

* embed abridged within full candidate receipt

* Update roadmap/implementors-guide/src/SUMMARY.md

Co-authored-by: Peter Goodspeed-Niklaus <[email protected]>

* Update roadmap/implementors-guide/src/SUMMARY.md

Co-authored-by: Peter Goodspeed-Niklaus <[email protected]>

* adjust text on candidate selection message to match

Co-authored-by: Peter Goodspeed-Niklaus <[email protected]>

* first pass updating candidate validation module in the guide

* expand candidate validation functionality section

* add candidate fetch; validation requires PoV to be provided

* remove candidate fetch

* Enforces presence of C-labels to designate the importance of a release
* Iterates over them on a release, takes the highest present and includes it in the release notes
* Lists the change(s) that caused the release to be that priority

* Rename old labels.

* Bump runtimes

* Bump versions

* Bump lock