Make close! a no-op for fully iterated queries?

[ameligrana]

currently

julia> using Ark

julia> struct Position
           x::Float64
           y::Float64
       end

julia> world = World(Position)
World(entities=0, comp_types=(Position))

julia> new_entity!(world, (Position(1, 1),))

julia> query = Query(world, (Position,))

julia> for (entities, positions) in query
           println("a")
       end

julia> close!(query)
ERROR: InvalidStateException: unbalanced unlock. Did you close a query that was already iterated?
Stacktrace:
 [1] _unlock
   @ ~/.julia/dev/Ark/src/lock.jl:18 [inlined]
 [2] close!(q::Query{World{…}, Tuple{…}, Tuple{…}, Val{…}, Tuple{…}, Val{…}, 1, 1})
   @ Ark ~/.julia/dev/Ark/src/query.jl:269
 [3] top-level scope
   @ REPL[7]:1
Some type information was truncated. Use `show(err)` to see complete types.

though, a no-op is probably better, and I think @mlange-42 you implemented already in ark, right?

[mlange-42]

Yes, exactly, I got convinced to make it a no-op.