* Update xcm support.

* Fix unit tests.

* fmt

* Add patches.

* Update xtokens.

* fmt

* Clean up.

* Cross-chain transfer weight.

* Weight for xcm execution.

* Keep clippy happy.

* Clean up.

* Buy execution on dest location.

* Better transfer error handling.

* Update deps.

* fmt

* fix fmt

* Update events in unit tests.

* rename MergeAccount to TransferAll

* fix

* Reserve chain trait.

* Rework cross-chain transfer.

* Remove relay chain balance convert.

* Add 'Parse' trait.

* Change transfer_multiasset fn signature.

* Add transfer dispatchable call.

* Update doc.

* Use xcm-simulator to mock network.

* Send relay chain asset to sibling unit test.

* Move location traits into orml-traits.

* Add MultiNativeAsset filter for is reserve check.

* More unit tests.

* Failing edge case unit tests.

* Handle zero amount asset case.

* Fix mocks.

* Renaming.

* refactor try_mutate_account

* remove OnReceived

* add merge account

* add transaction

* Add GetByKey trait and get_by_key_type macro.

* Renaming. Add docs.

* Make clippy happy.

* authority add runtime-benchmarks

* make-orml-oracle-instantiable

make sure all Trait have I parameter

fix rpc

create macro for AggregatedDataProviderImpl

undo change

undo change

add todo

change name trait name from DataProviderExtended to DataFeeder

implement DataProviderExtended for macro create_median_value_data_provider

fix comments

Update oracle/src/default_combine_data.rs

Co-authored-by: Shaopeng Wang <spxwang@gmail.com>

Update oracle/src/lib.rs

Co-authored-by: Shaopeng Wang <spxwang@gmail.com>

Update traits/src/lib.rs

Co-authored-by: Shaopeng Wang <spxwang@gmail.com>

keep this blank line

filter out None value here to reduce a traverse in retain, define a generic find_median fn to DRY

* fix dep version

* add comments to prove won't panic by using indexing []

* test write

* Fix oracle mocks.

* Rework median value provider and some traits.

* fmt

* Use sp_std Vec.

* Update oracle rpc.

* Fix typo.

Co-authored-by: zjb0807 <zjb0807@qq.com>
Co-authored-by: Bryan Chen <xlchen1291@gmail.com>
Co-authored-by: Shaopeng Wang <spxwang@gmail.com>

* refactor orml-authority

* update tests

* update authoirty tests

* fmt

* update docs

* fmt

* nightly fmt

* fmt

* dispatch Scheduled event

* merge orml-price into orml-traits

* fix tokens

* format

* remove prices

* make Change reusable

* rename

* Remove clippy workaround for decl_module.

* Fix typo.

* impl OnReceived for tokens

* update storage map keys of tokens

* Renaming substrate deps to their package names.

* Combine imports.

* add constructor for CheckOperator

* refactor the traits related to Currency

* format code

* modify

* update test cases

* update test cases

* update substrate

* fix tests

* make feed_value FreeOperational

* methods free_operational

* validate call

* validate call

* update

* OnNewData accepts who: AccountId

* missing comma

* Fix SignedExtension implementation

* Update oracle/src/lib.rs

* fix tests

* fix import

* move has_dispatched check into module call

* OnRedundantCall

* update

Co-authored-by: Xiliang Chen <xlchen1291@gmail.com>

* Add dust removal and transfer_all in orml-tokens.

* Ensure existential rule for transfer, deposit and withdraw.

* orml-tokens transfer: return error if dest balance is zero and transfer amount below existential deposit.

* set_balance helper.

* Existential deposit unit tests.

* Fix orml-currencies mock.

* Renaming.

* Update transfer_all in orml-tokens.

* Update paint balance adapting.

* Update error type.

* Update multi currency to basic currency adapting.

* Remove HasCompact bound for CurrencyId.

* Update BasicCurrencyAdapter struct define.

* first version of oracle module

* Update slash: return gap instead of slashed amount.

* Add unit test for tokens module slash.

* Impl BasicCurrency & BasicCurrencyExtended.

* Add currencies module.

* Minor fixes

* Add equality bounds for CurrencyId.

* Currencies: add transfer dispatch.

* Currencies: impl BasicCurrencyExtended.

* Add unit tests for currencies module.

* More unit test for currencies module.

* Currencies module: add NativeCurrency type.

* Update unit tests for native currency.

* Add BasicCurrency impl for any type which implements srml_support::traits::Currency.

* Fix typo.

* Add BasicCurrencyAdapter.

* BasicCurrencyAdapter unit tests.

* Update BasicCurrencyAdapter.

* Update slash impl for BasicCurrencyAdapter.

* add common traits

* apparently rebase merge don't trigger precommit