Co-op mod version 59

Features

• Add support for passing the difficulty via the commandline (192d05)

Bug fixes

• Improve co-op init file (#97)
  Fixes the 'missing map on launch' problem, adds support for custom strategic icons and in general
  improves the init file to be more informative about what is (not) going on

• Set correct number of available (player) slots for the client (56b650)

Contributors

• Jip (#97)
• speed2 (192d05, 56b650)