Does documentation for old ArcGIS Pro versions remain available online?

I have a suspicion that arcpy.CreateFeatureClass_management() has one more parameter at ArcGIS Pro 2.1.2 than it did at ArcGIS Pro 2.0.

Is the ArcGIS Pro 2.0 Help still available online to check this?

I would have expected to find it linked at the Documentation page like the old documentation for ArcMap is.

Answer

I don't think that the old help is available online, however, if you want to see what has changed for tools, you can visit the appropriate History section of the toolbox the tool resides in.

Data Management Toolbox History

Per that link, yes, Create FeatureClass has a new parameter, out_alias added at 2.1 to the end.