What's Changed
* Added DatetimeDelta Constant enum to Constant Parser by Ari24-cb24 in https://github.com/aridevelopment-de/datetimeparser/pull/131
* added missing evaluator grammar by NekoFanatic in https://github.com/aridevelopment-de/datetimeparser/pull/134
* Fixed critical recursion bug by Ari24-cb24 in https://github.com/aridevelopment-de/datetimeparser/pull/135
**Full Changelog**: https://github.com/aridevelopment-de/datetimeparser/compare/v0.2rc...v0.4rc