func (ms *Middlewares) Use(m Middleware) {
	if m == nil {
		return
	}
	*ms = append(*ms, m)
}
Use uses middleware
package parapet
import "net/http"
type Block interface {
	Middleware
	Use(Middleware)
}
type Middleware interface {
	ServeHandler(http.Handler) http.Handler
}
type MiddlewareFunc func(http.Handler) http.Handler
func (f MiddlewareFunc) ServeHandler(h http.Handler) http.Handler {
	return f(h)
}
type Middlewares []Middleware