Reformat with Rubocop #23
                
     Merged
            
            
          
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A consistent style helps when editing the code. Without any strong opinions I largely went for the rubocop defaults, with automatic corrections doing the bulk of the work.
Some method variable names were changed to longer ones. There is a Cop that identifies methods with short names. These changes were not just to satisfy the cop, as they also make the code easier to read.
When viewing this diff it might help to turn whitespace differences off.
I tested this with Street Spirit and the output is byte for byte identical