Merge branch 'introduce_ranges_to_changes_trie_config' of https://github.com/paritytech/substrate into introduce_ranges_to_changes_trie_config

Co-Authored-By: cheme <[email protected]>

* clarify comment

* clarify comment

* clarify comment

* Make sure that `srml-collective` does not initialize `Members` twice

* Implement trait for `()`

* Fix test

* Fix whitespacing

* Replace configurable fields with default values

* Bump version

* Apply suggestions from code review

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

* Fix more whitespacing

* Fix style

* Add transaction pool to babe import queue

* Add transaction pool to Babe check header

* Fix tests

* Add tx pool to Aura import_queue

* Fix tests, node-template

* Add comments regarding unused _transaction_pool

* Make tx pool optional in check_header

* Better state pinning

* Fixed pinning race

* Update core/state-db/src/noncanonical.rs

Co-Authored-By: Robert Habermeier <[email protected]>

`PeerSetHandle.set_priority_group` allows modifying a priority group by
group identifier. With this commit the function can be accessed through
`NetworkService`.

This is need in order for a validator to connect to as many other
validators as configured without reserving a specific connection slot
for them.

* Add code owners file.

* Update CODEOWNERS

* Update CODEOWNERS

* Forcing can be on or off.

* Add a testcase.

This reverts commit dc35cabd.

* Implement Deserialize for SignedBlock.

* Implement Deserialize for Header.

* Deserialize number.

* Deserialize number (second try).

* Fix line length.

* Remove ::'s.

* srml-contracts: Rename ext_scratch_copy to ext_scratch_read.

This is to disambiguate from the next ext_scratch_write function.

* Remove unnecessary OutputBuf and EmptyOutputBuf.

* Replace VmExecError with a result type of custom structs.

* Do not drop the scratch buffer on traps and regular returns.

This just reduces the number of allocations required during nested
contract calls and instantiations.

* Semantics for returning a status code and data from contract calls.

* Remove CallReceipt and InstantiateReceipt.

With forthcoming changes to return data from instantiate calls, the two
types of receipts become very similar to each other and to
ExecReturnValue. Instead, replace them with ExecReturnValue and
a regular 2-tuple in the case of instantiation.

* Modify contract function signatures to allow returning status codes.

* Introduce ext_sandbox_write runtime function.

* Test all the things.

* Bump node runtime spec version.

* Style fixes.

André Silva authored Aug 12, 2019 and asynchronous rob committed Aug 12, 2019

* node: exit on GRANDPA voter or BABE authoring error

* node: exit process with non-zero return code when service fails

* service: rename infallible task to essential task

* service: revert field name changes

* core: fix service testnet

* document that session key generation stores keys

* final typo fix

* Rewrite the observer work future

* Line widths

* Update core/finality-grandpa/src/observer.rs

Co-Authored-By: André Silva <[email protected]>

* Refactor `parse_and_execute`

Adds a new function named `parse_and_prepare`, which prepares the environment and parses the command.
Contrary to `parse_and_execute`, `parse_and_prepare` returns a struct that permis the user to execute the command, as opposed to execute it itself.

`parse_and_execute` has been modified to use `parse_and_prepare` internally.

* Embed dispatch functions directly into run()

After the previous commit, we now have a lot of functions whose only one is to call other functions. And these other functions are called only from one location.
Let's merge these two for clarity.

* Deprecate parse_and_execute and replace it in node and node-template

* Apply suggestions from code review

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

* Scale trait and move to u32 blocknumbers.

* Fixes

* Cleanups

* Update node/runtime/src/lib.rs

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

* Fix up some of the factory stuff.

* Update core/sr-primitives/src/traits.rs

Co-Authored-By: Shawn Tabrizi <[email protected]>

* Move Nonce/Index to u32 (#3361)

* Force a non-borked version of upstream crate

* Line lengths and runtime version bump

* Implement `is_validator` for offchain-workers

* Introduce `--no-validator` flag

* Don't run babe/grandpa/im-online when `--no-validator` is given

* Fixes compilation

* Bump spec version

* Improve error handling in executor

* Add missing extern function

* Revert making error public

* Remove `--no-validator` CLI