Allow World:remove to take the string name

[flamendless]

let's say i created something like this:
world:add({name="ground"},32,177,576,32)
i should be able to remove it using world:remove("ground")

Also, why not include bump_debug as a feature in the main bump library?

[kikito]

Hi,

i should be able to remove it using world:remove("ground")

As a library developer, I want to implement features that at least most of my users will use. I don't think that particular feature is popular or demanded enough, so I will not implement it. However, feel free to fork and use it in yours if it suits your particular usecase.

Also, why not include bump_debug as a feature in the main bump library?

The bump_debug library requires LÖVE to work. bump.lua is platform-independent and works with and without LÖVE.

Regards!