added param max_number_multiprocessing to set maximum number of processes to use, /close #308 on test success

Merge branch 'lukas_issue289_feat_cnn-model-class' into 'lukas_issue306_feat_data-handler-fir-filter'

include cnn class

See merge request !300

new data handler for mixed sampling and climate fir, fine tuning is required for new parameter apriori_diurnal