Beancount-parser

**Full Changelog**: https://github.com/LaunchPlatform/beancount-parser/compare/1.2.2...1.2.3

**Full Changelog**: https://github.com/LaunchPlatform/beancount-parser/compare/1.1.0...1.2.0

**Full Changelog**: https://github.com/LaunchPlatform/beancount-parser/compare/1.0.1...1.1.0

What's Changed
* Allow empty cost spec by myyra in https://github.com/LaunchPlatform/beancount-parser/pull/21

New Contributors
* myyra made their first contribution in https://github.com/LaunchPlatform/beancount-parser/pull/21

**Full Changelog**: https://github.com/LaunchPlatform/beancount-parser/compare/1.0.0...1.0.1

What's Changed
* Fix 19 complex cost spec grammar by fangpenlin in https://github.com/LaunchPlatform/beancount-parser/pull/20


**Full Changelog**: https://github.com/LaunchPlatform/beancount-parser/compare/0.2.0...1.0.0

**Full Changelog**: https://github.com/LaunchPlatform/beancount-parser/compare/0.1.24...0.2.0