1.0.1:
-Changed item location in crafting grid. Now the artillery is with the gun turrets.
-Fixed wrong explosion in use for shell impact. Should have been Huge-Explosion, was only explosion.
-New muzzle flash animation. 
-I intended the cost of the cannon and shells to offset the power of the damage, the feedback that it was cheap to construct and maintain lead to the following changes:

Research increased from 60 X (2 red, 2 green, 1 blue) 
to 90 X (1 red, 2 green, 3 blue)

Price of cannon increased from 50 Steel, 5 motors, 2 radars, 1 processing unit
to 100 Steel, 25 engines, 2 radars, 10 processing units

Price of shells increased from 3 for 5 steel, 5 explosive
to 1 for 12 steel, 6 explosive

Hopefully that is more in line with "expensive", however due to peoples bases being different this may not be the case or might be overboard and putting it out of reach of some players. Let me know, feedback appreciated.
