* bump version

* update license

* Add descriptions to all cargo subprojects

* Add repository field to all cargo subprojects

* Modify GitHub actions to run cargo unleash

* Add license-file field to all cargo subprojects

* Remove pallet-balances/std feature from std feature of schedule-update

* Add version numbers to path dependencies

* Fix compilation errors on all cargo subprojects

* Attempt to force use one version of the compiler

* Put cargo unleash step at the very end

* Fix all test compile errors

* Use drain_prefix instead of drain

* fix tests

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

* Renaming substrate deps to their package names.

* Combine imports.

* Upgrade substrate to alpha 5.

* Upgrade serde & codec.

* add constructor for CheckOperator

* refactor the traits related to Currency

* format code

* modify

* update test cases

* update test cases

* update to pre-release version

* update nightly version

* fix build issue

* rename to FRAME

* fix test

* add feed_values

* fix tests

* workaround check wasm issue

* workaround build issue

* Rename paint to palette.

* Fix typo.

* Update comments.

* rename srml to paint

* fix case

* 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

* Tokens module: impl MultiCurrencyExtended.

* Minor fixes.