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   Helper function for determining if control characters should be 
  printed to the IO streams. 
  This uses both the sys.std*.isatty() methods as well as the operating 
  system.  Control characters are only shown on GNU/Linux and Mac OS X (or 
  technically they are disabled on MS Windows as both cmd and the 
  PowerShell do not support the ANSI characters). 
  
    - Parameters:
 
    
        stream (int) - The stream to check.  The value of 0 corresponds to STDIN, 1 
          corresponds to STDOUT, and 2 corresponds to STDERR. 
      
    - Returns: bool
 
        - The answer of whether color and other control characters should 
          be printed.
 
   
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