message: Changelog for 0.30.2
diff: # Changelog
  +## Version 0.30.2 (2021-09-06)
  +
  +- Added depth and stencil buffer blitting.
  +- Added dual source blending.
  +- Implemented AsUniformValue for Texture2d directly.
  +
  ## Version 0.30.1 (2021-07-12)
  - Added `ClientFormat::U1U5U5U5Reversed`.
  