This repository use tags for versioning. Look in the Releases section to download the source for specific other Unity version, or use git tag to checkout a specific version (e.g. git checkout 18.2) ...

m_AmbientSkyColor: {r: 0.212, g: 0.227, b: 0.259, a: 1} m_AmbientEquatorColor: {r: 0.114, g: 0.125, b: 0.133, a: 1} m_AmbientGroundColor: {r: 0.047, g: 0.043, b: 0. ...

A 2D shape is symmetrical if you can draw a line through it and it looks exactly the same either side. This line is called a line of symmetry. Oh that rather smug expression tells me that square knows ...