Webmock 1.12 breaks query parameter compatibility, can't dupe Symbol/Fixnum when it tries to match a request signature.  Lock to < 1.12 for now.
Merge pull request #413 from smarterclayton/webmock_1_12_breaks_query_compat

Webmock 1.12 breaks query parameter compatibility, can't dupe Symbol/Fixnum when it tries to match a request signature.  Lock to < 1.12 for now.