[0.17.12](https://github.com/ladybug-tools/lbt-recipes/compare/v0.17.11...v0.17.12) (2021-09-22)
Bug Fixes
* **deps:** Bump pollination-handlers to 0.8.1 ([38e40e6](https://github.com/ladybug-tools/lbt-recipes/commit/38e40e65dfe46b123b60bd8fdf4409005d7e8159))
* **recipe:** Interpret empty strings as None ([57fdd8b](https://github.com/ladybug-tools/lbt-recipes/commit/57fdd8b01a5c2cdfe3b93f84349b8dff7d1a0887))