* add Algorithm support and update basemap source
* update titiler requirement to `>=0.16,<0.17`
- renamed `/crop` endpoints to `/bbox/...` or `/feature/...`
- `/crop/{minx},{miny},{maxx},{maxy}.{format}` -> `/bbox/{minx},{miny},{maxx},{maxy}.{format}`
- `/crop/{minx},{miny},{maxx},{maxy}/{width}x{height}.{format}` -> `/bbox/{minx},{miny},{maxx},{maxy}/{width}x{height}.{format}`
- `/crop [POST]` -> `/feature [POST]`
- `/crop.{format} [POST]` -> `/feature.{format} [POST]`
- `/crop/{width}x{height}.{format} [POST]` -> `/feature/{width}x{height}.{format} [POST]`