Gmo-fx

<!-- Release notes generated using configuration in .github/release.yaml at develop -->

What's Changed
Bug Fixes
* 92 expiryがNoneの場合にエラーが発生しないように修正 by RikitoNoto in https://github.com/RikitoNoto/gmo-fx-py/pull/93


**Full Changelog**: https://github.com/RikitoNoto/gmo-fx-py/compare/0.6.2...0.6.3

<!-- Release notes generated using configuration in .github/release.yaml at develop -->

What's Changed
Bug Fixes
* 87 listの参照が漏れているAPIの修正 by RikitoNoto in https://github.com/RikitoNoto/gmo-fx-py/pull/88


**Full Changelog**: https://github.com/RikitoNoto/gmo-fx-py/compare/0.6.1...0.6.2

<!-- Release notes generated using configuration in .github/release.yaml at develop -->

What's Changed
Bug Fixes
* 82 APIで利用するenumが参照できないバグ修正 by RikitoNoto in https://github.com/RikitoNoto/gmo-fx-py/pull/83


**Full Changelog**: https://github.com/RikitoNoto/gmo-fx-py/compare/0.6.0...0.6.1

<!-- Release notes generated using configuration in .github/release.yaml at develop -->

What's Changed
Feature
* 74 close order apiの作成 by RikitoNoto in https://github.com/RikitoNoto/gmo-fx-py/pull/80


**Full Changelog**: https://github.com/RikitoNoto/gmo-fx-py/compare/0.5.0...0.6.0

<!-- Release notes generated using configuration in .github/release.yaml at develop -->

What's Changed
Enhancement
* Feature/75 ref enum from class itis used by RikitoNoto in https://github.com/RikitoNoto/gmo-fx-py/pull/78


**Full Changelog**: https://github.com/RikitoNoto/gmo-fx-py/compare/0.4.0...0.5.0

<!-- Release notes generated using configuration in .github/release.yaml at develop -->

What's Changed
Feature
* Feature/73 order api by RikitoNoto in https://github.com/RikitoNoto/gmo-fx-py/pull/76


**Full Changelog**: https://github.com/RikitoNoto/gmo-fx-py/compare/0.3.0...0.4.0