Add unprotected methods to support default protected!

Bump to 0.5.13

Closes #46

LGTM given by: @rmcafee, @mattmanning

Squashed commit of the following:

commit fb7bd9d58da9b162170d7089a03dbea95a60387e
Author: Kenny Parnell <k.parnell@gmail.com>
Date:   Wed Nov 12 12:59:40 2014 -0500

    Bump to 0.5.13

commit 9cc1fbf3514ca2319b464e96eeee1083deb70cd5
Author: Kenny Parnell <k.parnell@gmail.com>
Date:   Wed Nov 12 12:54:30 2014 -0500

    Add unprotected methods to support default protected! in before filter.