added a section that is python specific
refactored the testcase
added a new test to check the total_nr_of_frames in a JSFile
New property to return the total nr of bytes for all headers in the dataset
accepting nrthreads input variabel
set nrthreads as an hidden property, and also collecting the header_length_in_bytes from the JS dataset along with the frame_header_length.
added a property to return the underlying dataset object
property to calculate the total number of frames in the dataset.