Perspective toggle_config not working

[MarcSkovMadsen]

I've been used to using Perspectives toggle_config parameter. After upgrade to 1.4.0 it no longer works on instantiation.

This can also be seen in the reference guide

After some inspection of the code base I can see a new settings parameter was introduced up to 1.4.0 and this is shadowing the toggle_config parameter.

Both parameters are mentioned (in different ways) in the reference documentation. But they do the same thing.

Only the settings parameter should be available. The toggle_config parameter needs to be removed.