matchers.go
func NewPath(path string) Path {
	if !strings.HasPrefix(path, "/") {
		path = "/" + path
	}
	return Path(path)
}
func NewPath(path string) Path {
	if !strings.HasPrefix(path, "/") {
		path = "/" + path
	}
	return Path(path)
}
// Path -----------------------------------------------------------------------
// NewPath returns a static URL path matcher.