* extract all network code to legacy submodule

* update references to legacy proto

* skeleton of futures-based protocol

* refactor skeleton to use background task

* rename communication_for to build_table_router

* implement internal message types for validation network

* basic ParachainNetwork and TableRouter implementations

* add some module docs

* remove exit-future from validation

* hack: adapt legacy protocol to lack of exit-future

* generalize RegisteredMessageValidator somewhat

* instantiate and teardown table routers

* clean up RouterInner drop logic

* implement most of the statement import loop

* implement statement loop in async/await

* remove unneeded TODO

* most of the collation skeleton

* send session keys and validator roles

* also send role after status

* use config in startup

* point TODO to issue

* fix test compilation

Make sure that --dev purge-chain is rejected

```
[0] [11:24:02] ~/r/polkadot master > ./target/debug/polkadot purge-chain --dev -y
"/home/cecile/.local/share/polkadot/chains/dev/db" did not exist.
[0] [11:25:36] ~/r/polkadot cecton-fix-invalid-argument-order > ./target/debug/polkadot --dev purge-chain -y
error: Found argument 'purge-chain' which wasn't expected, or isn't valid in this context

USAGE:
    polkadot --dev

For more information try --help
```

* Be specific about the `BitVec` generic arguments

Currently we use the default generic arguments for `BitVec`. This means
we use `BigEndian` and `u8`. These default values are not stable, with
`0.17` of the `BitVec` crate this changes. To make sure we don't break
anything in the future, make sure we explictly set the generics.

* Update `spec_version`

* Initial commit

Forked at: 703ac8bb
Parent branch: origin/master

* Test running node and interrupts

* WIP

Forked at: 1942ae27ae23809a40f955545dfbf0467faa7750
Parent branch: origin/cumulus-branch

* Update Cargo.lock

* WIP

Forked at: 1942ae27ae23809a40f955545dfbf0467faa7750
Parent branch: origin/cumulus-branch

* WIP

Forked at: 1942ae27ae23809a40f955545dfbf0467faa7750
Parent branch: origin/cumulus-branch

* WIP

Forked at: 1942ae27ae23809a40f955545dfbf0467faa7750
Parent branch: origin/cumulus-branch

* enable migrations in polkadot and kusama runtimes

* bump runtime version

* runtime: candidate receipt must pass parent head

* construct parachain candidates using correct parent_head

* validate that the parent header is correct in candidate receipt

* fix test fallout

* bump runtime versions

* Amalgamate pieces of balance module

* Fixes for vesting split

* Refactoring for vesting/balances split

* Build fixes

* Remove on_free_balance_zero and some docs.

* Indentation.

* Revert branch

* Fix.

* Update substrate: fixes after CLI refactoring

* Reverting removal of exit

* Removed too much again

* Update Cargo.lock

* Cargo.lock

* Update Substrate, ready for #4820

* Fixes

* Update to latest substrate master

* Fix network tests

* Update lock

* Fix tests

* Update futures to get bug fixes

* Fix tests for new balances/vesting logic

* Cargo fix

* Another fix

Co-authored-by: Cecile Tonglet <[email protected]>
Co-authored-by: Robert Habermeier <[email protected]>
Co-authored-by: Bastian Köcher <[email protected]>

* Fix browser.rs

* Apply suggestions from code review

Co-authored-by: Bastian Köcher <[email protected]>

* Bump runtime version

* Bump runtime version

* Update to latest Substrate master

* upgrade decl_storage declaration

* Companion PR to Substrate#4752

* Substrate update: Identity should bound additional fields (#4770)

Substrate commit: 2c9ce7296b19934b1ffd50150be2fdb2ddf81a4e

* WIP

* WIP

* Updated substrate and fixes

* Fix compilation and switch to latest wasm-builder-runner

* Fixed missing doc

* Update collator/src/lib.rs

Co-authored-by: Bastian Köcher <[email protected]>
Co-authored-by: thiolliere <[email protected]>
Co-authored-by: Pierre Krieger <[email protected]>
Co-authored-by: Cecile Tonglet <[email protected]>

* Update to latest Substrate master

* upgrade decl_storage declaration

* Companion PR to Substrate#4752

Co-authored-by: Bastian Köcher <[email protected]>
Co-authored-by: thiolliere <[email protected]>
Co-authored-by: Pierre Krieger <[email protected]>

* upgrade tokio again

* Remove WrappedExecutor

* switch to spawn_blocking

* Update docker.md

Few Edits:
 - Use the `latest` version of polkadot.
 - Add a missing `--` when reporting the version.

* Update docker.md use `westend` chain

> Alex doesn't exist anymore, the current test net is `westend`.
According to https://github.com/paritytech/polkadot/issues/803

* Final commit of tested westend config

* Minor update for validator 4's stake amount

* use decl_error in common runtime modules

* Apply suggestions from code review

Co-authored-by: Bastian Köcher <[email protected]>

* add json

* Add spec changes

* Fix config method

* spaces -> tabs

* Update to latest Substrate master

* Update wasm-builder and make `run` work

* ci: backport runtime version checks from v0.6 branch

* adjust substrate version file path

* Asyncify launch_work a bit more

* An error message misword

* A bit more async in collator

* update latest substrate polkadot-master

* fix test compilation

* bump version to 0.7.18

* bump impl_version

* update substrate

* Revert "Instantiate environment with asynchronous API (#768)"

This reverts commit a5d9645b.

* update substrate

* remove unused parameter type

* bump trie-db version for tests

* fix collator test

* update substrate

* remove unnecessary service changes

* add some more docs about statement import

* instantiate environment async

* move attestation service into subfolder

* refactor validation service architecture somewhat

* remove dependence on validation service in proposer

* fix a bunch of warnings

* improve docs

* introduce a builder for the validation service

* extract block production to its own file

* integrate new API into service

* address review grumbles

* Fix gitlab release drafting script

Don't scan commit body for PR-like commit messages. Fix warnings from linter,
and take object URL for signing verification from /git/ref/tags rather than hard-coding

* Temporarily Disable GPG verification in pending...

...release alerts. GPG verification of objects is also done before creating the
draft release so this isn't as bad as it sounds

* Temporarily Disable GPG verification in pending...

...release alerts. GPG verification of objects is also done before creating the
draft release so this isn't as bad as it sounds

* Remove accidental GH token leakage 😅

* point to in-progress Substrate branch

* instantiate environment async

* Fix futures

* Bump runtime

* Fix collation tests

* point to polkadot-master again

* point to polkadot-master again

* update deps

Co-authored-by: Ashley <[email protected]>

* Fix overflow in crowdfunding module

* Bump impl version