Add support for multiple --ascii graphs
Prune self._categories when we _prune_data() as well
Prettify the --list output
Kill off TODO item: tested sar files with 1 minute interval
Give a sensible error when no sar files are passed as argument
Remove unneeded parse_labels_csv method
A couple of TODO items
Allow the --ascii option to be used multiple times
Add SVG output support via the --svg option
Added TODO item
Removed logging support in sar parsing class

There is no need for us to do any logging here.
Any error will be raised as an exception.
Rename SAR to SarParser and remove matplot functionality
Remove SARError Exception

There is no need for a specific SAR Exception.
Every exception during parsing is a fatal one
so there is no need to specifically catch that one.
Remove plottimeseries method

This will be moved in a proper output-oriented class.
Having it in the parsing class is a layering violation.
Remove more LOGGER calls from Sar Parsing class
Cleanup the SarParser class. Add function comments where missing
Reorganize most classes
Rename SOSReport class and file
Add new clean sarstat file and extend .gitignore
Fix a couple of refactoring bugs