* **writer:** Treat no setpoint the same as un ([b9f93a4](https://github.com/ladybug-tools/honeybee-energy/commit/b9f93a48863de2af31e14284e324b2ffccca0235))
* **runperiod:** Improve to_idf to align with OpenStudio ([3a83e0e](https://github.com/ladybug-tools/honeybee-energy/commit/3a83e0e12bfc471c7cf53d28965ff2134b3a3cea))