`aeon` v1.0.0 Checklist

[MatthewMiddlehurst]

Describe the issue

A checklist of large-scale changes to be made for an eventual version v1.0.0

• [ ] Deprecate BaseTransformer and remove experimental tag from BaseSeriesTransformer
• [ ] Replace forecasting and BaseForecaster with simplified and more maintainable version
• [ ] Merge BaseEstimator and BaseObject and consider deprecation for a few of the currently available methods
• [ ] Replace current fixture/scenario based testing with a simplified testing suite. Remove experimental tag for testing
• [ ] Consider removing experimental tag for other modules
• [ ] Remove the datatypes module

[TonyBagnall]

we can do these things before going to 1.0.0. Personally I think 1.0.0 should come at the end of the grant

[MatthewMiddlehurst]

I think deprecating a whole module is a big enough of a change to warrant it. I don't know what would be if not. I think it's best just to get these big ones out at the same time.