message: Changelog for 0.29.0
diff: # Change Log
  +## Version 0.29.0 (2020-12-15)
  +
  +- Updated glutin to version 0.26.0. See the glutin release notes [here](https://github.com/rust-windowing/glutin/blob/master/CHANGELOG.md#version-0260-2020-12-10).
  +- Updated memoffset to 0.6.
  +- Added support for `glPolygonOffset`.
  +- Added support for loading SPIR-V shaders.
  +- Switched to edition 2018.
  +- Switched from Travis CI to Github Actions
  +
  ## Version 0.28.0 (2020-10-03)
  - Updated glutin to version 0.25.0. See the glutin release notes [here](https://github.com/rust-windowing/glutin/blob/master/CHANGELOG.md#version-0250-2020-10-02).
  