CSC297.Java 2003F, Class 18: Lists, Once Again

Admin:
* How did your homework for today go?
  * Pretty well, except that the print method was wrong.
  * Alex screws up, once again.
* New homework:
  * Figure out how to write removeLast
  * How can you write length efficiently?

Overview:
* Removing the first element.
* Adding to the end.
* Moral: Think about special cases and code for 'em.
* Moral: Think about effects on all the fields, and not just the most natural one.