Fleshed out the timeline object. Looks like I'm getting rid of the
ClipTime objects and using Entrys instead, but I'm not deleting it quite
yet.
MAJOR UPDATE - I got Timeline working!!!! There's a test in MainWindow
that reads 2 tapes in from 2 gktape files and generates a timeline more
or less correctly! I'm sure there's going to be more tweaks and such,
but for the most part the core logic seems sounds and is functional.

Major changes were made to many of the classes during the createTimeline
implementation. Perhaps the biggest change being the move from 1 clip
list in Tape to 4 - Intros Endings Fillers and Miscs.