| encoding/base64 | Package base64 implements base64 encoding as specified by RFC 4648. |
| errors | Package errors implements functions to manipulate errors. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/alecthomas/chroma | Package chroma takes source code and other structured text and converts it into syntax highlighted HTML, ANSI- coloured text, etc. |
| io | Package io provides basic interfaces to I/O primitives. |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| path | Package path implements utility routines for manipulating slash-separated paths. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |