Additional exercises to port

[BNAndras]

• [ ] Bottle Song
• [ ] Flatten Array
• [x] Isogram
• [ ] Luhn
• [ ] Proverb
• [ ] Queen Attack
• [ ] Robot Simulator
• [ ] Sieve
• [x] Allergies
• [x] Binary Search
• [x] Collatz Conjecture
• [x] Difference of Squares
• [x] Eliud's Eggs
• [x] Grains
• [x] Hamming
• [x] Nucleotide Count
• [x] RNA Transcription
• [x] Scrabble Score
• [x] Square Root
• [x] Triangle

I've ported all of these to other tracks in the last few months so they'll be fresh in my head.