* Added ECIES encryption

* tweaks

* fmt

* Make clippy happy

* Use local keystore

* qed

This removes the deprecated batch verification. This was actually never really activated.
Nevertheless, we need to keep the host functions around to support old runtimes which may import
these host functions. However, we do not give access to these functions anymore. This means that any new
runtime can not call them anymore. The host function implementations we keep will not do batch verification and will
instead fall back to the always existing option of directly verifying the passed signature.
`finish_batch_verification` will return the combined result of all the batch verify calls.

This removes the `TaskExecutorExt` which only existed to support the batch verification. So, any
code that used this extension can just remove the registration of them. It also removes
`SignatureBatching` that was used by `frame-executive` to control the batch verification.
However, there wasn't any `Verify` implementation that called the batch verification functions.

* Support stable rust for compiling the runtime

This pull request brings support for compiling the runtime with stable Rust. This requires at least
rust 1.68.0 to work on stable. The code is written in a way that it is backwards compatible and
should automatically work when someone compiles with 1.68.0+ stable.

* We always support nightlies!

* 🤦



* Sort by version

* Review feedback

* Review feedback

* Fix version parsing

* Apply suggestions from code review

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

---------

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

* Introduce keystore specialized sign methods

* Get rid of 'AppKey::UntypedGeneric' associated type.

Untyped generics are accessible using associated types 'Generic' associated type.
I.e. <T as AppKey>::Public::Generic

* Get rid of 'CryptoTypePublicPair'

* Trivial fix

* Small refactory of local keystore implementations

* Remove 'crypto_id' method from 'Public'

* Trivial rename of 'AppKey' to 'AppCrypto'

* Remove unused import

* Improve docs

* Better signature related errors for authority-discovery

* Apply review suggestion

* Apply review suggestions

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

* Authority discoverty signing error revisited

* Signing error revisited for babe and aura as well

* Further cleanup

---------

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

* Remove bloat about remote keystore

* Update docs and remove unused 'KeystoreRef' trait

* Use wherever possible, MemoryKeystore for testing

* Remove unrequired fully qualified method syntax for Keystore

* Remove 'supported_keys' 'sign_with_any' and 'sign_with_all' from keystore trait

* Remove the aync keystore

* Renaming:
- SyncCryptoStore -> Keystore
- SyncCryptoStorePtr -> KeystorePtr
- KeyStore -> MemoryKeystore

* Fix authority discovery worker and tests

* Rename 'insert_unknown' to 'insert'

* Remove leftover

* Change copyright year to 2023 from 2022

* Fix incorrect update of copyright year

* Remove years from copy right header

* Fix remaining files

* Fix typo in a header and remove update-copyright.sh

* ed25519: Don't panic for invalid signature

We should not panic for an invalid signature when the `UseDalekExt` is given.

* Update Cargo.toml

* Update primitives/io/Cargo.toml

* Remove sandboxing interface

* Remove unused struct

* ed25519_verify: Support using dalek for historical blocks

The switch from `ed25519-dalek` to `ed25519-zebra` was actually a breaking change. `ed25519-zebra`
is more permissive. To support historical blocks when syncing a chain this pull request introduces
an externalities extension `UseDalekExt`. This extension is just used as a signaling mechanism to
`ed25519_verify` to use `ed25519-dalek` when it is present. Together with `ExtensionBeforeBlock` it
can be used to setup a node in way to sync historical blocks that require `ed25519-dalek`, because
they included a transaction that verified differently as when using `ed25519-zebra`.

This feature can be enabled in the following way. In the chain service file, directly after the
client is created, the following code should be added:

```
use sc_client_api::ExecutorProvider;
client.execution_extensions().set_extensions_factory(
	sc_client_api::execution_extensions::ExtensionBeforeBlock::<Block, sp_io::UseDalekExt>::new(BLOCK_NUMBER_UNTIL_DALEK_SHOULD_BE_USED)
);
```

* Fix doc

* More fixes

* Update client/api/src/execution_extensions.rs

Co-authored-by: André Silva <[email protected]>

* Fix merge and warning

* Fix docs

Co-authored-by: André Silva <[email protected]>

* Remove `sp_tasks::spawn` API and related code

* Remove `RuntimeTasks::{spawn, join}` host functions

* remove unused

* Remove a few more tests that I forgot to remove

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

* swap ed25519-dalek for ed25519-zebra; no batch verificaiton

fixed batch verificaiton tests

removed additional zero verificaiton tests

removed comments, fixed test bug, added #[derive(Clone)]

Update primitives/core/src/ed25519.rs

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

* modified assertion to allow default ed25519-zebra zero key behavior

* cargo clippy

* Update primitives/core/Cargo.toml

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

* Update primitives/core/src/ed25519.rs

Co-authored-by: Davide Galassi <[email protected]>

* Update primitives/core/src/ed25519.rs

Co-authored-by: Davide Galassi <[email protected]>

* Update primitives/core/src/ed25519.rs

Co-authored-by: Davide Galassi <[email protected]>

* Update primitives/core/src/ed25519.rs

Co-authored-by: Davide Galassi <[email protected]>

* updated Cargo.lock for sp-core

* fix inaccurate comment

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

* Expose allocation stats in `FreeingBumpHeapAllocator`

* Return allocation stats when calling into the runtime

* Bump `parity-scale-codec` to 3.1.3 (fork)

* Prevent double allocation of the payload when calling `sp_io::storage::get`

* Fix tests

* Remove unnecessary `mut`

* Enable the `bytes` feature for `parity-scale-codec` in `sp-runtime-interface`

* Update client/allocator/src/freeing_bump.rs

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

* Bump `parity-scale-codec` to 3.1.3

* Fix some of the UI tests

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

* Fix all warnings when building for wasm

Besides that it also enables warnings as errors for wasm builds in the CI.

* FMT

* Make clippy happy

* Use `loops` rather than `backend` for compatibility.

* Move over other converters

* Fix overlay prefix removal result

* Second part of the overlay prefix removal fix.

* Report only items deleted from storage in clear_prefix

* Fix kill_prefix

* Formatting

* Remove unused code

* Fixes

* Fixes

* Introduce clear_prefix host function v3

* Formatting

* Use v2 for now

* Fixes

* Formatting

* Docs

* Child prefix removal should also hide v3 for now

* Fixes

* Fixes

* Formatting

* Fixes

* apply_to_keys_whle takes start_at

* apply_to_keys_whle takes start_at

* apply_to_keys_whle takes start_at

* Cursor API; force limits

* Use unsafe deprecated functions

* Formatting

* Fixes

* Grumbles

* Fixes

* Docs

* Some nitpicks 🙈



* Update primitives/externalities/src/lib.rs

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

* Formatting

* Fixes

* cargo fmt

* Fixes

* Update primitives/io/src/lib.rs

Co-authored-by: Keith Yeung <[email protected]>

* Formatting

* Fixes

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

* Apply some clippy hints

* Revert clippy ci changes

* Update client/cli/src/commands/generate.rs

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

* Update client/cli/src/commands/inspect_key.rs

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

* Update client/db/src/bench.rs

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

* Update client/db/src/bench.rs

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

* Update client/service/src/client/block_rules.rs

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

* Update client/service/src/client/block_rules.rs

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

* Update client/network/src/transactions.rs

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

* Update client/network/src/protocol.rs

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

* Revert due to missing `or_default` function.

* Fix compilation and simplify code

* Undo change that corrupts benchmark.

* fix clippy

* Update client/service/test/src/lib.rs

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

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

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

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

remove leftovers!

* Update client/tracing/src/logging/directives.rs

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

* Update utils/fork-tree/src/lib.rs

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

* added needed ref

* Update frame/referenda/src/benchmarking.rs

* Simplify byte-vec creation

* let's just not overlap the ranges

* Correction

* cargo fmt

* Update utils/frame/benchmarking-cli/src/shared/stats.rs

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

* Update utils/frame/benchmarking-cli/src/pallet/command.rs

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

* Update utils/frame/benchmarking-cli/src/pallet/command.rs

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

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

These docs didn't mention how the removal works internally. This is important for the user to know
that calling such a method multiple times in the same block leads always to the same result.

* Replace libsecp256k1 with secp256k1

* Wipe ecdsa secret key from memory on drop

* Some comments for a known issue

* Safer core crypto primitives `from_slice` constructor

Previous version panics if slice lenght is not the expected one.

* Unit test fix

* Enable use of global secp256k1 context

* Better comments for ecdsa `Pair` drop

* Replace `libsecp256k1` with `seco256k1` in `beefy-mmr`

Used to convert ecdsa public key to ETH address

* Replace `libsecp256k1` with `secp256k1` in FRAME `contracts`benchmarks

* Temporary rollback of `beefy-mmr` to libsecp256k1

Check for detected build issues

* Cargo fmt

* Rollback of FRAME `contracts` benchmarks to `libsecp256k1`

* Rollback for unrelated changes

* Typo fix

* Add comments for deprecated `ecdsa_verify` and `secp256k1_ecdsa_recover`

Add a new host function for reporting fatal errors; make WASM backtraces readable when printing out errors (#10741)

* Add a new host function for reporting fatal errors

* Fix one of the wasmtime executor tests

* Have `#[runtime_interface(wasm_only)]` actually mean WASM-only, and not no_std-only

* Print out errors through `Display` instead of `Debug`

* Switch one more trait to require `Error` for its error instead of only `Debug`

* Align to review comments

* starting

* Updated from other branch.

* setting flag

* flag in storage struct

* fix flagging to access and insert.

* added todo to fix

* also missing serialize meta to storage proof

* extract meta.

* Isolate old trie layout.

* failing test that requires storing in meta when old hash scheme is used.

* old hash compatibility

* Db migrate.

* runing tests with both states when interesting.

* fix chain spec test with serde default.

* export state (missing trie function).

* Pending using new branch, lacking genericity on layout resolution.

* extract and set global meta

* Update to branch 4

* fix iterator with root flag (no longer insert node).

* fix trie root hashing of root

* complete basic backend.

* Remove old_hash meta from proof that do not use inner_hashing.

* fix trie test for empty (force layout on empty deltas).

* Root update fix.

* debug on meta

* Use trie key iteration that do not include value in proofs.

* switch default test ext to use inner hash.

* small integration test, and fix tx cache mgmt in ext.
test  failing

* Proof scenario at state-machine level.

* trace for db upgrade

* try different param

* act more like iter_from.

* Bigger batches.

* Update trie dependency.

* drafting codec changes and refact

* before removing unused branch no value alt hashing.
more work todo rename all flag var to alt_hash, and remove extrinsic
replace by storage query at every storage_root call.

* alt hashing only for branch with value.

* fix trie tests

* Hash of value include the encoded size.

* removing fields(broken)

* fix trie_stream to also include value length in inner hash.

* triedbmut only using alt type if inner hashing.

* trie_stream to also only use alt hashing type when actually alt hashing.

* Refactor meta state, logic should work with change of trie treshold.

* Remove NoMeta variant.

* Remove state_hashed trigger specific functions.

* pending switching to using threshold, new storage root api does not
make much sense.

* refactoring to use state from backend (not possible payload changes).

* Applying from previous state

* Remove default from storage, genesis need a special build.

* rem empty space

* Catch problem: when using triedb with default: we should not revert
nodes: otherwhise thing as trie codec cannot decode-encode without
changing state.

* fix compilation

* Right logic to avoid switch on reencode when default layout.

* Clean up some todos

* remove trie meta from root upstream

* update upstream and fix benches.

* split some long lines.

* UPdate trie crate to work with new design.

* Finish update to refactored upstream.

* update to latest triedb changes.

* Clean up.

* fix executor test.

* rust fmt from master.

* rust format.

* rustfmt

* fix

* start host function driven versioning

* update state-machine part

* still need access to state version from runtime

* state hash in mem: wrong

* direction likely correct, but passing call to code exec for genesis
init seem awkward.

* state version serialize in runtime, wrong approach, just initialize it
with no threshold for core api < 4 seems more proper.

* stateversion from runtime version (core api >= 4).

* update trie, fix tests

* unused import

* clean some TODOs

* Require RuntimeVersionOf for executor

* use RuntimeVersionOf to resolve genesis state version.

* update runtime version test

* fix state-machine tests

* TODO

* Use runtime version from storage wasm with fast sync.

* rustfmt

* fmt

* fix test

* revert useless changes.

* clean some unused changes

* fmt

* removing useless trait function.

* remove remaining reference to state_hash

* fix some imports

* Follow chain state version management.

* trie update, fix and constant threshold for trie layouts.

* update deps

* Update to latest trie pr changes.

* fix benches

* Verify proof requires right layout.

* update trie_root

* Update trie deps to  latest

* Update to latest trie versioning

* Removing patch

* update lock

* extrinsic for sc-service-test using layout v0.

* Adding RuntimeVersionOf to CallExecutor works.

* fmt

* error when resolving version and no wasm in storage.

* use existing utils to instantiate runtime code.

* Patch to delay runtime switch.

* Revert "Patch to delay runtime switch."

This reverts commit 67e55fee468f1a0cda853f5362b22e0d775786da.

* useless closure

* remove remaining state_hash variables.

* Remove outdated comment

* useless inner hash

* fmt

* fmt and opt-in feature to apply state change.

* feature gate core version, use new test feature for node and test node

* Use a 'State' api version instead of Core one.

* fix merge of test function

* use blake macro.

* Fix state api (require declaring the api in runtime).

* Opt out feature, fix macro for io to select a given version
instead of latest.

* run test nodes on new state.

* fix

* Apply review change (docs and error).

* fmt

* use explicit runtime_interface in doc test

* fix ui test

* fix doc test

* fmt

* use default for path and specname when resolving version.

* small review related changes.

* doc value size requirement.

* rename old_state feature

* Remove macro changes

* feature rename

* state version as host function parameter

* remove flag for client api

* fix tests

* switch storage chain proof to V1

* host functions, pass by state version enum

* use WrappedRuntimeCode

* start

* state_version in runtime version

* rust fmt

* Update storage proof of max size.

* fix runtime version rpc test

* right intent of convert from compat

* fix doc test

* fix doc test

* split proof

* decode without replay, and remove some reexports.

* Decode with compatibility by default.

* switch state_version to u8. And remove RuntimeVersionBasis.

* test

* use api when reading embedded version

* fix decode with apis

* extract core version instead

* test fix

* unused import

* review changes.

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

* Remove Default for AccountId

* More removals of default

* Update frame/authorship/src/lib.rs

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

* Update frame/authorship/src/lib.rs

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

* Update frame/authorship/src/lib.rs

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

* Update frame/authorship/src/lib.rs

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

* More work

* More work

* Remove old code

* More work

* pallet-asset-tx-payment

* tips

* sc-consensus-babe

* sc-finality-grandpa

* sc-consensus-babe-rpc

* sc-cli

* make npos crates accept non-default account (#10420)

* minimal changes to make npos pallets all work

* make this pesky reduce.rs a bit cleaner

* more work

* more work

* Tests build

* Fix imonline tests

* Formatting

* Fixes

* Fixes

* Fix bench

* Fixes

* Fixes

* Fixes

* Fixes

* Fixes

* Formatting

* Fixes

* Formatting

* Fixes

* Formatting

* Fixes

* Formatting

* Fixes

* Formatting

* Update client/keystore/src/local.rs

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

* Update client/finality-grandpa/src/lib.rs

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

* Update client/keystore/src/local.rs

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

* Update client/keystore/src/local.rs

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

* Update frame/staking/src/lib.rs

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

* Update frame/staking/src/lib.rs

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

* Update primitives/runtime/src/traits.rs

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

* Formatting

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

* expose ecdsa_sign_prehashed in sp-io

* add ecdsa_verify_prehashed to host functions for completeness

* cargo fmt

* fix bags list

* improve doc

* doc

* inner doc

* fix test

* Update docs in frame/election-provider-support/src/lib.rs

* fix staking impl

* prepend unsafe to clear and regenerate

* fix test

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

* Remove light client, change tries and CHTs

* Update tests

* fmt

* Restore changes_root

* Fixed benches

* Cargo fmt

* fmt

* fmt

* SpawnNamed: add new trait methods

Signed-off-by: Andrei Sandu <[email protected]>

* Implement new methods

Signed-off-by: Andrei Sandu <[email protected]>

* cargo fmt

Signed-off-by: Andrei Sandu <[email protected]>

* SpawnNamed: add new trait methods

Signed-off-by: Andrei Sandu <[email protected]>

* Implement new methods

Signed-off-by: Andrei Sandu <[email protected]>

* cargo fmt

Signed-off-by: Andrei Sandu <[email protected]>

* New approach - spaw() group param

Signed-off-by: Andrei Sandu <[email protected]>

* Update traits: SpawnNamed and SpawnNamed

Signed-off-by: Andrei Sandu <[email protected]>

* Update TaskManager tests

Signed-off-by: Andrei Sandu <[email protected]>

* Update test TaskExecutor

Signed-off-by: Andrei Sandu <[email protected]>

* Fix typo

Signed-off-by: Andrei Sandu <[email protected]>

* grunt work: fix spawn() calls

Signed-off-by: Andrei Sandu <[email protected]>

* cargo fmt

Signed-off-by: Andrei Sandu <[email protected]>

* remove old code

Signed-off-by: Andrei Sandu <[email protected]>

* cargo fmt - the right version

Signed-off-by: Andrei Sandu <[email protected]>

* Implement review feedback

- use Option group name in SpawnNamed methods
- switch to kebab case
- implement default group name
- add group name to some tasks

Signed-off-by: Andrei Sandu <[email protected]>

* Prepare UI tests for rust 1.54

* Delete wrong_page.stderr

* CI: run with a staging CI image

* Revert "CI: run with a staging CI image"

This reverts commit 66f5b00d14b50fd9d8fbf773f7e884f380697591.

* CI: debug, again

* LOG_TARGET is only used in std

* Remove unnecessary unsafe

* Fixes

* Use correct rustc locally

* FMT

* Compile with benchmarking

* Review feedback

* Some ui tests

* I know...

* Fix wasm tests

Co-authored-by: Denis P <[email protected]>
Co-authored-by: thiolliere <[email protected]>

* RUSTSEC-2021-0076 bump libsecp256k1

libsecp256k1 allows overflowing signatures
https://rustsec.org/advisories/RUSTSEC-2021-0076

Changes were made to conform to libsecp256k1 version differences.

Closes #9356

* parse_standard_slice() -> parse_overflowing_slice()

* Added v2 host function for ecdsa_verify

* Add feature tag over helpers

* Added ecdsa_verify v2 to test runner

* PR feedback

- Spaces -> tabs
- renamed two helper functions

* Fixed imports after rebasing

* Bump rest of libsecp256k1 (and libp2p)

libp2p also uses libsecp256k1 so it is required to be bumped too, along
with all the version difference changes.

* Add version2 for ecdsa pubkey recovery

* libp2p rebase master fixes

* Fix test panic when non Behaviour event is returned

* Update bin/node/browser-testing/Cargo.toml

* Update primitives/core/src/ecdsa.rs

* Update primitives/core/src/ecdsa.rs

* Update Cargo.lock

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

* reformat everything again

* manual formatting

* last manual fix

* Fix build

* Remove extra commas made redundent after rustfmt

* Run cargo fmt on the whole code base

* Second run

* Add CI check

* Fix compilation

* More unnecessary braces

* Handle weights

* Use --all

* Use correct attributes...

* Fix UI tests

* AHHHHHHHHH

* 🤦

* Docs

* Fix compilation

* 🤷

* Please stop

* 🤦

 x 2

* More

* make rustfmt.toml consistent with polkadot

Co-authored-by: André Silva <[email protected]>

* Less slices

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

* remove prefixed content with limit.

* test match

* factor comment and factor ext limit removal.

* fix benchmark

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

* Transaction storage runtime module

* WIP: Tests

* Tests, benchmarks  and docs

* Made check_proof mandatory

* Typo

* Renamed a crate

* Apply suggestions from code review

Co-authored-by: Kian Paimani <[email protected]>

* Added weight for on_finalize

* Fixed counter mutations

* Reorganized tests

* Fixed build

* Update for the new inherent API

* Reworked for the new inherents API

* Apply suggestions from code review

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

* Store transactions in a Vec

* Added FeeDestination

* Get rid of constants

* Fixed node runtime build

* Fixed benches

* Update frame/transaction-storage/src/lib.rs

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

Co-authored-by: Kian Paimani <[email protected]>
Co-authored-by: cheme <[email protected]>
Co-authored-by: Alexander Popiak <[email protected]>
Co-authored-by: Shawn Tabrizi <[email protected]>

* emit a custom section from impl_runtime_apis!

This change emits a custom section from the impl_runtime_apis! proc macro.

Each implemented API will result to emitting a link section `runtime_apis`.
During linking all sections with this name will be concatenated and
placed into the final wasm binary under the same name.

* Introduce `runtime_version` proc macro

This macro takes an existing `RuntimeVersion` const declaration, parses
it and emits the version information in form of a linking section.
Ultimately such a linking section will result into a custom wasm
section.

* Parse custom wasm section for runtime version

* Apply suggestions from code review

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

* Fix sc-executor integration tests

* Nits

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

* Refactor apis section deserialization

* Fix version decoding

* Reuse uncompressed value for CallInWasm

* Log on decompression error

* Simplify if

* Reexport proc-macro from sp_version

* Merge ReadRuntimeVersionExt

* Export `read_embedded_version`

* Fix test

* Simplify searching for custom section

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

We need this in order to be able to assemble more fine grained host
function sets.

E.g. we don't want to use `SubstrateHostFunctions` for PVF. We would
better whitelist certain host functions. However, we cannot do that
because we cannot refer to the `Allocator` runtime interface.

I have not been able to find the reason why it wasn't made `pub` in the
first place, but do not see any reason why not to.

* Use host max log level when initializing the `RuntimeLogger`

This should fix performance problems introduced by logging under certain
circumstances. Before we always called into the host and the host was
doing the log filtering, now as the correct max log level is set, we
don't call into the host for every log line to check if it should be
logged. However, we would still call into the host to determine if
something should be logged when `something=trace` is given as we don't
forward the log targets that are enabled.

* Finish the pr

* Add MMR custom RPC.

* Change RuntimeApi to avoid hardcoding leaf type.

* Properly implement the new RuntimeAPI and wire up RPC.

* Extract Offchain DB as separate execution extension.

* Enable offchain DB access for offchain calls.

* Fix offchain_election tests.

* Skip block initialisation for proof generation.

* Fix integration test setup.

* Fix offchain tests. Not sure how I missed them earlier 🤷.

* Fix long line.

* One more test missing.

* Update mock for multi-phase.

* Address review grumbbles.

* Address review grumbles.

* Fix line width of a comment

* implement

* make default pre/post_upgrade

* simplify Cargo.toml

* revert removal of outdated/private links

* link in pallet-mmr