Userguide improvements #221
Description
- Lengthscales & transforms (see Clarify behaviour/documentation of transform() #217)
- Documentation of TensorProduct (from Documentation improvements (inc. lengthscale explanation) and Matern12Kernel alias #213 (comment))
- Discussion around Functors.functor (from Documentation improvements (inc. lengthscale explanation) and Matern12Kernel alias #213 (comment))