Version 0.4.0

This new release adds pints.Transformation and associated subclasses, which provide methods to transform between different representations of a parameter space; for example from a "model space" (p) where parameters have units and some physical counterpart to a "search space" (e.g. q=log(p)) where parameters are non-dimensionalised and less-recognisable to the modeller. Parameter transformation can be useful in many situations, for example transforming from a constrained parameter space to an unconstrained search space using RectangularBoundariesTransformation leads to crucial performance improvements for many methods.

For other changes please consult the CHANGELOG