0.5.30

Change set since 0.5.29:

3afae34: Bump version to 0.5.30
22a98cd: Fix language file
f900c50: Fix /ac current friends not correctly extracting arguments
3dcd2bc: Remove deprecated method usage
ea2afc8: Experimental: use Heightmap.Types.WORLD_SURFACE in tp shortcut
71bc2a1: Register AreaControlPermissions.SET_FRIENDS
1ca3e18: Always let player entities bypass the restriction
2649264: Make area.allow_spawn more intuitive