* fix oracle

* fix warning

* 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.

* feat: prices module

* fix: add check to avoid dividing by zero

* fix: delete num_traits dependency

* add auction module

* remove redundant traits definition

* add tests

* get reference instead of ownership

* optimized code

* fix check with latest substrate

* update nigthly version

* trying to fix CI

* trying to fix ci

* fix

* fix

* add linked item

* fix ignore

* add tests for linked_item

* support workspace workflow

* add missing `--all`

* add common traits

* apparently rebase merge don't trigger precommit

* Tokens module: impl MultiCurrencyExtended.

* Minor fixes.

* remove workspace, fix githook under submodule, use add run script to run cargo command on all files

* update run script and use it for format

* fix build issue

* add quote

* fix CI

* Error type for MultiCurrency trait and tokens module.

* fmt

* Update error type.

* Update transfer unit test.

* Tokens module unit tests.

* Remove workspace src directory

* Add example crate.

* fmt

* Update example.

* Minor fixes.

* Remove allow dead code.

* Define MultiCurrency trait.

* Declare storage.

* Impl multi currency trait for tokens module.

* Balance transfer.

* Fix typo.

* fmt

* Add transferred event.

* Update tokens trait and slash impl.

* Use value type for currency id params.

* fmt

add test workflow