* Removed doctest call
* Removed 0 and 1 append to `fib_array`
* Moved fibonacci sequence logic into `calculate`
* Refactored `get` to generate missing numbers
* Renamed `fib_array` to `sequence`
* Renamed `number` to `index`
* Refactored `get` to only return sequence to `index`
* Moved main block into function
* Added documentation to `get`
* Added missing type hints
* Fixed doctest error in `get` docstring
* Moved calculate logic into get
* Reformatted with black
* Fixed wrong generation range