RE-integrated SLN-R-Fit into scripts, but remove SLN_logdensities.R and deactivate SLN Fit for now because of cell density data copyright issue

Implement for flexible option for initial rates in theory, add parameters to default_params, improve documentation of theory class and theory params in default_params

Rename viscortex_processed_data.json to viscortex_processed_data_backup.json and store only necessary predefined data

Remove dependency from h5py_wrapper completely: Store data in binary numpy data files, add test_analysis to test analysis class, fix many bugs in analysis and analysis_helpers

Add requirements file for add. requirements for figures of Schmidt2017, make Fig5 script independent of R installation, update README file with information on requirements