Fixed grammar/vocabulary and improved balance
Mission 7: Added more pickhammers so that it's harder to run out of them, added more weapons to the AI
Mission 6: Removed reset possibility, added sticky mines, more weapons for AI every six turns
Enter commit message. Lines beginning with 'HG:' are removed.
[patterns]
**.h = native
**.c = native
**.cpp = native
**.lua = native
**.txt = native
**.pas = native
**.inc = native
**.hs = native