Imports github.com/spf13/pflag github.com/spf13/viper github.com/BurntSushi/toml github.com/hashicorp/golang-lru github.com/uoregon-libraries/gopkg/logger golang.org/x/image/tiff Standard library imports bytes encoding/json errors fmt io io/ioutil math net/http net/url os path image/draw image image/color openjpeg iiif image/gif image/jpeg image/png magick mime regexp strconv strings time transform version