new features: * add RGB indices * add OTB morphological and statistical texture bands * add analytical DEM bands * add extract train pixels convenient functions
bugfixes:
* fix some minor errors
bugfixes: * fix CRAN issues * fix some minor errors
bugfixes: * fix CRAN issues * fix some minor errors
bugfixes: * fix staged installation
new features: * add data * add convinient functions
bugfixes: * fix sveral algorithms
bugfixes: * fix issues 12-16 # fix numerous bugs and typos