FR: Directly attach a timing to a nested category

[fredrikekre]

Sometimes it would be nice to have something like

@timeit ["A", "1"] begin
    # ...
end

@timeit ["A", "2"] begin
    # ...
end

instead of having to write

@timeit "A" begin
    @timeit "1" begin
        # ...
    end
end

@timeit "A" begin
    @timeit "2" begin
        # ...
    end
end

or

@timeit "A" begin
    @timeit "1" begin
        # ...
    end

    @timeit "2" begin
        # ...
    end
end

if you don't have any other code in between "1" and "2".

[fredrikekre]

Perhaps

@timeit to["A"] "1" begin
    # ...
end

@timeit to["A"] "2" begin
    # ...
end

for the explicit to case and

@timeit ["A"] "1" begin
    # ...
end

@timeit ["A"] "2" begin
    # ...
end

with the default timer?