HyperSpy is an open source Python library which provides tools to facilitate the interactive data analysis of multi-dimensional datasets that can be described as multi-dimensional arrays of a given signal (e.g. a 2D array of spectra a.k.a spectrum image). This is a minor release that includes bug fixes and the following new features and enhancements. NEW Transposing (changing signal spaces). Protochips log reader. Enhancements fit() takes a new algorithm, the global optimizer differential evolution. fit() algorithm, leastsq, inherits SciPy’s bound constraints support (requires SciPy >= 0.17). fit() algorithm names changed to be consistent scipy.optimze.minimize() notation.