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
Make --custom work again after the refactoring
Allow multiple --custom arguments
Allow multiple --label arguments
Fix 0.2 version in sarstats executable
Add short description about the classes
Show the loopback interface by default
Fix --maxgraph regression after refactoring
Clean up TODO