| encoding/hex | Package hex implements hexadecimal encoding and decoding. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/GeertJohan/go.rice | |
| github.com/davecgh/go-spew/spew | Package spew implements a deep pretty printer for Go data structures to aid in debugging. |
| log | Package log implements a simple logging package. |
| net/http | Package http provides HTTP client and server implementations. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| text/template | Package template implements data-driven templates for generating textual output. |