Add session 04 folder and dict_set file for task 1
Create dictionary, delete cake entry  from dictionary, and check status of keys and values
Add dictionary zip to combine number range with hexadecimal range
Add copy of dictionary1, but replace values with count of a in orginal values
Add set creation function that finds the divisor of the inputs and sets divisible by 2, 3, and 4
Add two sets and display the union of insection of the two
Add short_sherlock file with section of sherlock story and trigrams file
Add imports and open and read short_sherlock text
Add function that creates a word list from txt file
Add function that returns the count of words in a word list
Add function that returns a dictionary of trigrams from a word list
Add function that returns a new story from a dictionary of trigrams
Close the txt file and add the script actions
Add safe_input file
Add safe_input function that returns None instead of raising EOFError and KeyboardInterrupt
Add docstring to safe_input function
Add mailroom file and Safe_input file feature from previous task
Add check_float function that returns if a input is a float or not
Add dictionary of donors and functions to print names, add a new donor, and update a existing donor
Add main_menu function that directs user to other functions based on input