Imports of package extension

PathSynopsis
bytesPackage bytes implements functions for the manipulation of byte slices.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/yuin/goldmark
github.com/yuin/goldmark/ast
github.com/yuin/goldmark/extension/ast
github.com/yuin/goldmark/parser
github.com/yuin/goldmark/renderer
github.com/yuin/goldmark/renderer/html
github.com/yuin/goldmark/text
github.com/yuin/goldmark/util
regexpPackage regexp implements regular expression search.
strconvPackage strconv implements conversions to and from string representations of basic data types.
unicodePackage unicode provides data and functions to test some properties of Unicode code points.