2019-02-28 Demo

Changes:

• Added more scenery to levels.
• Added stop lights and street signs that break when you walk through them.
• Added title intro graphic to levels.
• Fix bug in Tutorial stage where player can get stuck on right side of screen.
• Removed the ability to kill civilians by stepping on them (I thought I removed this last update...)
• Added effects when Tower trailer stack is destroyed.
• Added new enemies:
  • Truck Shooter.  Acts similar to police officer roadblock shooter, except has a higher rate of fire.  Also the truck will drive away when the player gets to close.
  • Tower shooter.  Stands of platform attached to tower trailer stack and shoots player. Can be killed by either being jump swatted, hit by a thrown civi, or destroying the base of the tower.

There's other stuff I added that I didn't show for this demo (like level 3).  I have been working this on and off for the past 2 months, so there might be some things that I forgot to mention that I added.