missing Unreal file extensions for UE4

[regosen]

I see you have this in getClass:

["unreal-icon",[null,null],/\.uc$/i,,false,,/\.uc$/i,/^UnrealScript$/i],

Which covers old Unreal3-era file extensions (.uc), but not the ones for Unreal Engine 4, such as the following:

• .uasset
• .uplugin
• .uproject
• .umap

Can you please add entries for those?

[regosen]

Also note that .uproject and .uplugin files are just JSON text, so they might benefit from being labeled with the same icon as other JSON files.

.uasset and .umap files are binary.

[websemantics]

Hi @regosen
I'll be happy to accept a pull request for these changes. Thanks for the suggestion