Merge branch 'shawntabrizi-identity-bench' of github.com:paritytech/substrate into shawntabrizi-identity-bench

Patch d4fbb897 reintegrated the periodic neighbor packet worker, by
moving its logic into a `Future` implementation on `NetworkBridge` which
needs to be polled by its upper layer.

Polling by the upper layer was implemented within the `Future`
implementation of the `VoterWork` struct but not within the `Future`
implementation of the `ObserverWork` struct. This patch adds polling of
the `NetworkBridge` to the latter.

* Identity should bound additional fields

* ump rutnime

* Add `get_global` for `Sandbox`

This pr adds `get_global` to retrieve a `global` variable from an
instantiated sandbox wasm blob.

* Bump `spec_version`

* Update primitives/wasm-interface/src/lib.rs

Co-Authored-By: Sergei Pepyakin <[email protected]>

* `get_global` -> `get_global_val`

Co-authored-by: Sergei Pepyakin <[email protected]>
Co-authored-by: Gavin Wood <[email protected]>

* Remove free transaction dos vectors.

* Bump spec version

* Indentation.

* Update frame/support/src/weights.rs

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

* LinkedMap doesn't implement StoragePrefixedMap

* fix test

* adding license fields to all crates

* Apply suggestions from code review

Co-Authored-By: Bastian Köcher <[email protected]>

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

A light client can not be a validator, so we should not set `authority
== true` in dev mode.

* Rpc api for offchain storage

* Replace Vec<u8> to Bytes, replace Mutex to RwLock

* Remove pub

* Modify copyright year

* Remove unneccessary duplication in generic asset create

* Increment impl_version due to refactoring generic_asset

* Display error message when checking has_api.

* Cargo.lock.

* Add SS58 network identifier for Centrifuge

* Bump version

* Update template to use decl_error

* Test for error on template

* Comments

* Reorder decl_* blocks: storage, event, error, module

* Remove TODOs

* Clarify comment on type Error = Error<T>

* Print extrinsic failed error always, not just on import

Before we printed the error of a transaction only when importing a
block, this pr changes it to print the error also at building the block.

* Increment `impl_version`

* Make sure to destroy state in case of error.

* Update client/src/call_executor.rs

* Update client/src/call_executor.rs

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

* WASM runtime switch to import memory

Up to now runtimes have exported their memory. To unify it with
sandboxing, this pr switches runtimes to import memory as well.

From a functional perspective, exporting/importing memory makes no
difference to the runtime.

To provide backwards compatibility, WASM exported memory is still supported.

* Revert debug stuff

* Revert some stuff

* Fixes for libp2p 0.15

* More work

* Update libp2p

* Update to libp2p 0.15