grafx - Extensible Java Graphics Package Code

Changing comments. Adding TODO item. Going to shift gears a bit and take a
break from this, it's very involving and I need to be in the correct state of
mind.

Changing terminology in comment, 'point' -> 'vertex'.

Reducing size of copyright font just a little bit.

Adding script 'compile-video-1x.sh'.

Starting a TODO.txt for 3D graphics package.

Computing zMin and zMax for line drawer.

Not passing m_line as parameter to the four line drawing subroutines, since
that is as much private and is as much a member variable as are the four
subroutines. Using m_line directly from the four subroutines.

Beginning to add comment explaining line strategy.

Trying to draw vertex normals, it sort of works actually.

Adding TODO comment.