Handle invert_axes for all Element types

[philippjfr]

We never implemented invert_axes for all Element types. This code does that ensuring that any plot can now be adjoined.

Fixes:

• Ensure arbitrary adjoined elements render correctly in matplotlib #1033
• Support invert_axes on Raster types #780
• Allow any plot as adjoints #358

[jlstevens]

Looks good although I was hoping to see cruft removed with a replacement at the level of ElementPlot or some such base class.

Happy to merge once the tests pass, ideally with a few new unit tests.

[philippjfr]

This is not ready to review or merge.

[jlstevens]

This is not ready to review or merge.

I know! Which is why I kept my comments general and checked you hadn't added the WIP tag (yet).

[philippjfr]

Looks good although I was hoping to see cruft removed with a replacement at the level of ElementPlot or some such base class.

Not really possible, a baseclass can't know how to properly invert the data for a particular Element.

[philippjfr]

Ready to merge.

[jlstevens]

I'll merge though I do have one question.

Not really possible, a baseclass can't know how to properly invert the data for a particular Element.

Perhaps this could be made easy at the data API level?

[philippjfr]

If it was just about invert_axes I'd definitely agree with you, but in many cases it's tied up with the code to invert_xaxis and invert_yaxis, which definitely isn't a data API level concept.