Kata

Create a function that takes a string as a parameter and does the following, in this order:

1. Replaces every letter with the letter following it in the alphabet (see note below)
2. Makes any vowels capital
3. Makes any consonants lower case

Note:

• the alphabet should wrap around, so Z becomes A
• in this kata, y isn't considered as a vowel.

So, for example the string "Cat30" would return "dbU30" (Cat30 --> Dbu30 --> dbU30)