move CompileMarkdown to package

renderer.go

@@ -1,19 +1 @@
 package main
-
-import (
-	"bytes"
-
-	"github.com/russross/blackfriday"
-)
-
-type ConfluenceRenderer struct {
-	blackfriday.Renderer
-}
-
-func (renderer ConfluenceRenderer) BlockCode(
-	out *bytes.Buffer,
-	text []byte,
-	lang string,
-) {
-	out.WriteString(MacroCode{lang, text}.Render())
-}