Update CHANGELOG.md for release v0.5.3

CHANGELOG.md

@@ -3,7 +3,12 @@
 `frames.project` now has a `method` option which allows for choosing projection using opencv-methods (`method="cv"`)
 which is currently still the default, or numpy-like operations (`method="numpy"`). `method="numpy"` is new and we 
 may change the default behaviour to this option in a later release as it is much more robust in cases with a lot
-of lens distortion and where part of the area of interest is outside of the field of view..
+of lens distortion and where part of the area of interest is outside of the field of view.
+
+Videos can now be rotated, e.g. if a camera was setup with vertical orientation, without having a metadata tag for this.
+Video rotation can be defined in the camera configuration, on the CLI with `--rotation` using either `90`, `180` or `270`
+as measured in degrees, or for individual single videos as an additional input argument to `pyorc.Video`
+e.g. `pyorc.Video(..., rotation=90)`.
 ### Changed
 Some default values for estimating the intrinsic lens parameters from control points are changed. We now estimate the 
 first two barrel distortion coefficients if enough information for constraining them is available.