Imports github.com/ahmedash95/ratelimit github.com/dchest/captcha github.com/gorilla/csrf github.com/gorilla/mux github.com/gorilla/sessions github.com/joho/godotenv github.com/lib/pq golang.org/x/crypto/bcrypt Standard library imports database/sql fmt html html/template io io/ioutil log net/http os path/filepath time