reformatted some whitespace.
solved 1.8
solved 1.9
solved 1.10a
solved 1.10b
left the rest of 1.10 for later.
solved the missing exercise.
solved 1.11
solved 1.12
finished the constructor surjectivity in 1.12
updated corrupted file
solved 1.13
bogloads of loverley homework
snapshot
snapshot.
snapshot