tile-join tilejson v3 and v3.1 support

[imran-5]

I have merged two MBTiles (metadata v3) using tile-join command successfully, after merging to single MBTiles the metadata of tilejson was changed to v2 by Tippecanoe. is there any way to set metadata to v3 or v3.1?

[e-n-f]

The version in the metadata is always set here: https://github.com/mapbox/tippecanoe/blob/master/mbtiles.cpp#L306. If you need a different number, you will currently have to change it in the code there.