Add 'end' argument for `allpages`, `allusers` etc. generators (#123)
Add 'end' argument for `allpages`, `allusers` etc. generators (#123)

This follows on from #114 and addresses #87, providing an `end`
arg for all these generators, letting you get 'all pages between
Bar and Foo' or whatever it is you may need.
ubibene/mwclient,mwclient/mwclient