This contains prebuilt libraries of `<vector<tile>>map` of the OpenScienceMap project.

Currently these are created from a merge of the 
[master branch from opensciencemap/vtm](https://github.com/opensciencemap/vtm) with the 
[viewport-sync branch from hjanetzek/vtm](https://github.com/hjanetzek/vtm/tree/viewport-sync)