Build 1182

Pretty much down to the wire in terms of any bugs blocking a final release. I might implement just 1 more combat feature and 2 or 3 more Victory Actions and then exit out of Beta. Changes in this build:

• Reduce chances of hitting target with missile weapon based on number of entities in the way.
• Use better mechanism to overlap ambient sounds.
• Marginal improvement to tile rendering by removing sub-pixel rendering.
• Clarify Burl's curse applies with either cutlass or derringer.
• Add information about stats to the user manual.