Keops-vt

Added

- Feature to retrieve the tile info and metadata of a MBTiles.
- Feature to shrink (simplify) a MBTiles file. It uses [tileshrink](https://github.com/rastapasta/tileshrink).
- Feature to debug a MBTiles file, obtaining layers, number of features and number of vertices of each layer.

Removed

- Setup.py file.

Added

- Feature to read a MBTiles, obtaining the required tiles from it.
- Feature to remove a given tile in a MBTiles.
- Feature to get the size of a given tile or zoom in a MBTiles.