This function takes in a plan of study and the expected time to degree, then outputs a subcomplexity graph that contains all of the courses beyond the time to degree and their prerequisites.
transfer_excess_courses(
plan_of_study,
expected_time_to_degree,
include_coreqs = TRUE
)igraph object - the subcomplexity graph
igraph object - An igraph object created using the create_plan_of_study function
Numeric - The term where students are expected to finish (often 8)
Logical - Calculates the delay factor using corequisites, default value is TRUE