Haralick features, progress bar and quality of life

• Added Haralick texture features (Credit: https://mathworks.com/matlabcentral/fileexchange/58769-haralicktexturefeatures)
• Added global variable for sharing calculation between features
• Load ROIs if they have already been extracted (saves loading the map, which can be slow).
• Added progress bar when working with ROIs (Credit: https://github.com/JAAdrian/MatlabProgressBar)
• Fixed error handling of ROIs outside map boundaries
• Fixed long excel sheet names

ECPA 2019

First official release presented at European Conference on Precision Agriculture 2019 (ECPA2019).