Reworked aircraft acceleration. Now acceleration is divided into separate charges. The number of charges can be improved by items.
Redesigned system for strengthening opponents with increasing difficulty of missions. Now opponents will not become suddenly very strong.
Fixed a bug in production when it was possible to build 0 consumable items.
The system of acquiring items has been revised. Before it always issued an "unusual" item. Now the chance to drop items of different rarities is balanced.