Initial commit.
Add addition and subtraction functions and buttons.
Add multiplication function.
Add divide and square root functions.
Add exception handling for each math function.
Remove commented out html.
Copy calcit lab to homework file.
Revise html to use select box for operators.
Revise add function to take advantage of dropdown operators and html text fields.
Revise subtraction function as with add function.
Revise multiplication and divison functions and address issue of javascript not thinking 0 counts as a truthy answer.
Revise squareroot function.
Add text fields and button for mortgage calc.
Add mortgage calc and advanced.js file for non-basic calcs.
Add bmi calc.
Add text fields and button from trip calc.
Add trip calculator.
Add special 'calculator.'
Add some styling.