Release 4.0.0

What Changed?

• It used to be that the Group function handled 3 different scenarios:
• .Group("/users") - group with existing middleware
• .Group("/users", nil) - group but retain no middleware
• .Group("/users", MoreMiddleware) - group, retain existing and add MoreMiddleware

This was confusing and even I was always referring to the function to remember what it all did so here is how it works now.

1. .Group("/users") - group with existing middleware
2. .GroupWithNone("/users") - group but retain no middleware.
3. .GroupWithMore("/users", MoreMiddleware) - group, retain existing and add MoreMiddleware