message: Added to changelog.
diff: ## Unreleased
  +- Added c_rasterband method to Rasterband to obtain the raw C pointer to GDALRasterBandH
  +
  + - <https://github.com/georust/gdal/pull/359>
  +
  - **Breaking**: `Feature::geometry` returns an `Option<&Geometry>` instead of `&Geometry`. Calls to `Feature::geometry` will no longer panic.
  - <https://github.com/georust/gdal/pull/349>
  