Give read access to the current route, a feature that many of you asked for

Former-commit-id: 39295ac1331ee08d3047c84f5c8ea152bce96781

context/route.go

@@ -0,0 +1,18 @@
+package context
+
+// RouteReadOnly allows decoupled access to the current route
+// inside the context.
+type RouteReadOnly interface {
+	// Name returns the route's name.
+	Name() string
+	// String returns the form of METHOD, SUBDOMAIN, TMPL PATH.
+	String() string
+	// Path returns the route's original registered path.
+	Path() string
+
+	// IsOnline returns true if the route is marked as "online" (state).
+	IsOnline() bool
+
+	// ResolvePath returns the formatted path's %v replaced with the args.
+	ResolvePath(args ...string) string
+}