Upgrade to tensorflow2

Mini-analyses and waveform plotter

Update common.py

This lets get_resource load in files which are pickled

g2 was wrong (the S2 bottom value was used) and e_ces was omitted. TODO: how did this pass the output checks??

Update common.py

Adds json and json.gz to the availible files to be read in by get_resource.

Upgrade pulse processing, cleanup