Saleor-flat-tax-plugin

What's Changed
* Fix regression when Saleor recalculates order by carlosa54 in https://github.com/carlosa54/saleor-flat-tax-plugin/pull/6

Check https://github.com/saleor/saleor/discussions/10431 for full context

**Full Changelog**: https://github.com/carlosa54/saleor-flat-tax-plugin/compare/v0.5.0...v0.5.1

What's Changed
* Update code to support Saleor 3.6 by carlosa54 in https://github.com/carlosa54/saleor-flat-tax-plugin/pull/5

Breaking change
Saleor versions before 3.6 won't work with this version of the plugin

**Full Changelog**: https://github.com/carlosa54/saleor-flat-tax-plugin/compare/v0.4.0...v0.5.0

What's Changed
* Update PluginErrorCode import with correct location

**Full Changelog**: https://github.com/carlosa54/saleor-flat-tax-plugin/compare/v0.3.0...v0.4.0

What's Changed
* Add flat_tax precision

**Full Changelog**: https://github.com/carlosa54/saleor-flat-tax-plugin/compare/v0.2.0...v0.3.0

What's Changed
* Update code to account for breaking changes in [3.0.0-b.36](https://github.com/saleor/saleor/releases/tag/3.0.0-b.36)'s https://github.com/saleor/saleor/pull/8821 PR

**Full Changelog**: https://github.com/carlosa54/saleor-flat-tax-plugin/compare/v0.1.0...v0.2.0

Saleor versions before [3.0.0-b.36](https://github.com/saleor/saleor/releases/tag/3.0.0-b.36) won't work. Stay with the v0.1.0 version.

Initial release