Please add a kwarg to the Route object which makes trailing slash optional about webapp-improved HOT 4 OPEN

You can use 
RedirectRoute(https://webapp-improved.appspot.com/_modules/webapp2_extras/routes
.html#RedirectRoute)

using attribute strict_slash will enforce always a trailing slash in each route.

RedirectRoute requires a redirect which is costly.  There is no need for a 
browser redirect in this case as webapp2 could just return the content.

I can see how the recirect could be useful in certain circumstances through so 
I don't advise changing the current functionality.  I actually added this 
functionality myself by subclassing Route.

That's True.. How do you actually subclass Route? I mean how do you add this 
functionality?