[bugfix] Markdown formatting updates (#743)

* add minify dependency specifically for markdown

* rearrange markdown formatting

* update markdown tests

vendor/github.com/tdewolff/parse/v2/error.go

@@ -0,0 +1,47 @@
+package parse
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+)
+
+// Error is a parsing error returned by parser. It contains a message and an offset at which the error occurred.
+type Error struct {
+	Message string
+	Line    int
+	Column  int
+	Context string
+}
+
+// NewError creates a new error
+func NewError(r io.Reader, offset int, message string, a ...interface{}) *Error {
+	line, column, context := Position(r, offset)
+	if 0 < len(a) {
+		message = fmt.Sprintf(message, a...)
+	}
+	return &Error{
+		Message: message,
+		Line:    line,
+		Column:  column,
+		Context: context,
+	}
+}
+
+// NewErrorLexer creates a new error from an active Lexer.
+func NewErrorLexer(l *Input, message string, a ...interface{}) *Error {
+	r := bytes.NewBuffer(l.Bytes())
+	offset := l.Offset()
+	return NewError(r, offset, message, a...)
+}
+
+// Position returns the line, column, and context of the error.
+// Context is the entire line at which the error occurred.
+func (e *Error) Position() (int, int, string) {
+	return e.Line, e.Column, e.Context
+}
+
+// Error returns the error string, containing the context and line + column number.
+func (e *Error) Error() string {
+	return fmt.Sprintf("%s on line %d and column %d\n%s", e.Message, e.Line, e.Column, e.Context)
+}