[2.0] URLs should default to lowercase / dasherized (both configurable)

[ritch]

This is a breaking change. You should be able to configure the URL style to support old clients though.

1.x

FooBar => /FooBar
fooBar => /fooBar
foo-bar => /foo-bar

2.x (proposal)

FooBar => /foo-bar
fooBar => /foo-bar
foo-bar => /foo-bar

[raymondfeng]

Maybe we should mount the routes to multiple paths for best compatibility.

[fabien]

See #90

[bajtos]

Fixed by #90.