5.0.1

• Fast XRF fitting: Give the user the option not to check for negative peak
  contributions in order to maximize speed. The default behavior is unchanged.
• Add copyright information to files missing it.
• Correct bug: Windows frozen binary could not start batch from main window.
• Correct bug: Fast XRF fit was not working on dynamically loaded stacks when
  negative peak contributions were detected.
• Correct bug: Save action was not active on some plots.

5.0.0

This release can use the fisx library (as of version 1.0.0) to calculate up to tertiary excitation corrections when analyzing XRF spectra.

A different namespace (PyMca5) is used in order to allow simultaneous installation with PyMca 4.x.x versions.

Other important changes are:

• Removed dependency on PyQwt
• Change license to MIT (thanks to the compatibility with PySide)
• Use of new style signals in to assure compatibility with PyQt5.