Download-tiles

- Fixed bug in released version caused by unnecessary `attr` import. 6

- `--name=` option for setting the name to be written into the `metadata` table. If you use the `--city` or `--country` options without passing the `--name` the city or country name will be used instead. 5
- `--attribution=osm` shortcut for setting the attribution to `© OpenStreetMap contributors` without having to type that out in full. 4

- New `--attribution` option for writing an attribution record to the `metadata` table. 3

- `--city` and `--country` options as an alternative to `--bbox`. 1

Initial working version.