The Deep Merge

Today, we'll be writing a simple, yet powerful function to solve a simple problem -- "deep merging".

Let's say you have these two dictionaries

source = {"name": "tejumade", "hobbys": {"sport": ["running", "tennis"]}, "education": {"secondary": "School of Science, Okebola", "tertiary": {"graduate": {"masters": "Saarland", "phd": {"type": "phd"}}}}}