luminance-windowing 0.2.1

Common windowing code for luminance
Documentation
## 0.2.1

> Friday, 29 of June, 2018

  - Add support for `luminance-0.27`.

# 0.2

> Sunday, 17th of June, 2018

  - Re-export the new `luminance` backend interface.
  - Remove the concept of `Device` and the concept of `Surface`.

## 0.1.1

> Sunday, 1st of October, 2017

  - Fix a small nit in the documentation.

# 0.1.0

> Saturday, 30th of September, 2017

  - Initial revision.