Core modules

A major revision of the core modules has been conducted. This includes cleaning up, eliminating many obsolete functions, as well as re-organizing functions, across modules.

• core_functions.py: general purpose functions. It has been cleaned up, and a simple test suite has been added. There is also a doc notebook (which is not included in this commit, waiting for policy on notebooks and docs to be fully agreed).
• core_functions_performance.py: a module with a simple example case of performance of python vs Cython for a particular example.
• mpl_functions.py: general purpose plotting functions. No tests are relevant here, but the plotting functions are exercised in the documentation notebooks (diomira, irene) which are ready to be committed.
• system_of_units.py: definition of system of units. Extensively tried and tested, stable.
• random_sampling.py: sampler of SiPM pdf functions. Diomira-notebook shows that it behaves as expected but a test would be nice (Gonzalo Martinez, pending).
• log_config.py: configures the logger. Not used currently, possible candidate for deletion.
• configure.py: utility used for configuration, works as expected, stable.
• sensor_functions.py: collects functions that manipulate sensors. Most of them exercised in notebooks. A test could be added.
• tbl_functions.py: utility for pYtables manipulation.
• wfm_functions.py: waveform manipulation. There is a simple test suite (can be enlarged).
• wfm_to_df_functions.py: collection of functions where wmf are transformed to data frames for manipulation. Not used at the moment. Possible candidate for deletion.
• mctrk_functions.py: for manipulation of MC “true” tracks. Not being used at the moment (reconstruction does not use “true” variables) but eventually useful.
• peak_functions.py: to be revised in next cycle, associated to Irene.
• pmaps_functions.py: to be revised in next cycle, associated to Irene.