Added a pop up asking user if they would like to pause if we go ten iterations without a valid schedule
fixes instructor computer preference to ignore courses that require computers
add default constraints yaml file
add initial default constraint parsing
check for and add default constraints in globs
make added constraints box display default constraints
add course constraint parsing/addition
remove debugging print statement
remove debugging comments, add docstrings to helper functions
add tests for default constraints
resolve test output bug, remove unnecessary variables in globs
fixes wrong returned values on 3 constraints when mandatory; consolidates lab constraints into 1 constraint
updates test to account for consolidated lab constraint
tweak print_concise() to sort by instructor name
fix constraint toggle to re-pack the time_frame
Merge pull request #56 from donnell74/pause

Added a pop up asking user if they would like to pause if we go ten iter...
Merge pull request #57 from donnell74/fix_instructor_computer_use

Fixes instructor computer preference constraint
fix constraint adding conflict for max courses and computer preference
add conflict detection for max_courses constraints
change invalid time in example course_before_time constraint