Observation Phase Changes

As I was finishing up the Movement Phase revamp today, I realized that I hadn't shown you the changes to the Observation section yet.

Besides being moved out of the turn chapter, and into the "WarStrike Basics" chapter, Observation has been shortened by two pages. Most of what was cut were rules about targeting buildings and obstacles (and their attendant diagrams/illustrations). Only the rules for targeting building openings remain.

The actual rule count only decreased by one, since I fixed some logical flaws that Stelek found, and also added in rules for stunned and engaged models being considered hidden for LoS/Visibility purposes.

Thoughts? Obvious typos that I missed?