Merged task1 and task2 packages.
This meant added task4_read() to File
Node has an updated toString that will prevent it from causing a NullpointerException with no parents
Made another count_in_data variation for use by the getMIof() method of Solution
Adjusted main() to run through task4 after task1's content.
removed task2 package
Merge branch 'master' of https://github.com/JonathanHolland/COMP3702