New features

Rewrote the fleet spawn system (my thanks to Gimpel for some exciting save games, one of them had 104 fleets in a single sector). This allows fleets to correctly reinforce contested sectors, and addresses several bugs.

Bug fixes

Sectors can now have more than 9 fleets contesting them.
A player will now always be able to enter a sector, no matter how many fleets are contesting it.
Contesting fleets will keep jumping into a sector whenever there is space available, fixing an issue where fleets were seemingly idling and not assisting in battle.
Fleets spawning should no longer overlap existing ships. This could lead to ships getting stuck or being instantly destroyed.
Fixed various serialisation issues which could cause odd behaviours and crashes in Infinite War.
Message boxes will no longer spawn on game/engine warnings, only on fatal errors.
Models were being incorrectly clipped when the camera was at its maximum range (the range is dynamic, so this would only happen with the highest end artillery weapons and increased range perks)
Various engine improvements to better support ultra widescreen resolutions.