Add rename feature!

[katomaso]

Please merge after #12

Add capability to rename hard coded names inside patters.

url(U / 'user' / slug, my_view) # view has to be def my_view(request, slug)
# but in case of libraries we often need a different argument name than 'slug'
url(U / 'user' / slug % 'username', library_view) # view is def library_view(request, username)

I think that modulo operator reminds of formatting operator thus can be viewed as formatting the name. Hope you like this solution.

Cheers
Tom

[coveralls]

Coverage decreased (-1.1%) to 95.522% when pulling 71d97cc on katomaso:feature/rename into 462a774 on Visgean:master.

[coveralls]

Coverage decreased (-1.1%) to 95.522% when pulling 71d97cc on katomaso:feature/rename into 462a774 on Visgean:master.

[Visgean]

I find this to be more confusing then simply using a new regular expression.

[katomaso]

But it is a nice option for lazy people like me who just want to rename default pattern

[Visgean]

maybe something like slug('project_slug') could work. If we replaced slug with a function...

[katomaso]

That would be very intrusive. The syntax I proposed is three-line change in code. We could think of other operator maybe?

[Visgean]

I don't find this solution pretty, but I think users are perfectly able to use any kind of libraries providing such functionality...

[katomaso]

Can be done easily via slug.replace("slug", "action") so this pull request was really unnecessary