Merge pull request #3 from EFTEMj/scripts+macros

Scripts+macros
Merge pull request #4 from EFTEMj/scripts+macros

Scripts+macros
Merge pull request #5 from EFTEMj/scripts+macros

Scripts+macros
SR-EELS_characterisation.ijm will use several threshold methods

This is a first draft that uses several threshold methods.
The goal is to find the best thereshold method automatically.

Signed-off-by: Michael Entrup <entrup@arcor.de>