Adding version to the geojson elements

[viksuper555]

Fixes #155

[viksuper555]

I would like to hear your feedback on this.

P.S. The tests seem broken, although my changes don't really affect them.

[mvexel]

Hi, thanks for this! I'll have a look.

[mvexel]

Sorry @viksuper555 I have been so busy with life things. I'll have a look!

[mvexel]

version is already available in the feature properties when get() is called with verbosity="meta": https://github.com/mvexel/overpass-api-python-wrapper/blob/main/overpass/api.py#L315

We can discuss if that is the right place for it, but I would like to avoid having the same information in the output twice. Thoughts?

[mvexel]

@viksuper555 As commented on #155 -- this information is available so I will not merge this. Thanks for the effort though, and if you have any concerns with the way the metadata is exposed, don't hesitate to come back and discuss.