Update engine to f75115a.

mod.config

@@ -1,7 +1,7 @@
 # The id of the mod to launch by default.  This must exist as a directory in the mods directory
 MOD_ID="example"
 
-ENGINE_VERSION="3e5c211"
+ENGINE_VERSION="f75115a"
 
 # Import the default OpenRA mods for use as external mod references
 # in your mod.yaml. Accepts values "True" or "False".

mods/example/mod.yaml

@@ -60,6 +60,8 @@ SpriteFormats: ShpTS
 
 SpriteSequenceFormat: DefaultSpriteSequence
 
+ModelSequenceFormat: PlaceholderModelSequence
+
 GameSpeeds:
 	default:
 		Name: Normal