feature/evepy

• Implement eve in python as a new cli tool evepy
• Maintains the same behaviour as eve with a round robin shuffle by default and the following command line options:
• • -n : no shuffle
• • -r : randomise using Fisher Yates algorithm and stream output whilst randomising
• • -R: randomise using builtin shuffle

Also support input and output file selection using the -i and -o flags respectively.