New era.

Campaign file updated.

Changes in the third mission:

1) Narrow passages have been widened where possible.
2) Shadowear and Kahn have been slightly weakened.
3) Starting information has been duplicated in the description of the main objective ("Prevent the capture of the Celestial Gates").
4) Several auxiliary buildings, resources, and monsters have been added.
5) Highlighting of important areas has been added.
6) The starting army of General Kane and Railag has been increased.
7) Sound effects on the map have been restored.
8) A bug has been fixed where creatures placed in mines and garrisons remained there after being captured by the enemy.