add bob assignment
add rna transcription assignment
add wordcount assignment
use better method for translation in example
add anagram assignment
add beer-song example
add nucleotide-count assignment
add point-mutations exercise
add phone-number assignment
add grade-school assignment
add robot-name assignment
standardize Python exercise error messages
add etl assignment
add leap year example

this leaves out the monkeypatching bit since it's super ugly/hacky/bad
in Python.
Python: Add bob unit tests
Python: bob: Add additional unit test
Python: bob: Add example solution
add space-age assignment
add grains assignment
add gigasecond assignment