[x] implement rio-cogeo version with web-optimized flag. #40 (remove manual overviews, setting them automatically, adding tiling_scheme to api, setting web-optimized as default)
[x] fixed cog path #42
[x] reprojected bounds #43
[x] updated thumbnail creation #44 (new folder name, handling large tifs and 4 band tifs)
This PR implements several fixes:
tiling_schemeto api, setting web-optimized as default)