* Start

* More work

* Add proc-macro for `validate_block`

* Make everything compile

* Add some test

This is basically a hack that prevents the inclusion of `:code` in the
storage proof. A proper fix requires some changes to the trie crate to
not include nodes that aren't read.

* update substrate

* try again

* Slap runtime_version macro everywhere

* Update Substrate

This includes the fix of compilation for macOS platforms.

* Introduce `CollectCollationInfo` runtime api

Instead of using well known keys to communicate information about a
collation between the runtime and the collator, we now use a runtime api
for this.

* Fixes bug

* Apply suggestions from code review

Co-authored-by: Sergei Shulepov <[email protected]>

* Doc update

Co-authored-by: Sergei Shulepov <[email protected]>

* Companion for #3010 (Reserve Xfer extrinsic)

* cargo update -p xcm

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

* Companion for #3007: Track teleported assets

* Bump

* Try fix the breakage

Co-authored-by: Sergei Shulepov <[email protected]>

* Rename `rococo-collator` to `polkadot-collator`

Also contains some other small changes.

* Test fixes and some further search&replace