Allow object-id to convert string to object-id
Merge pull request #86 from Skinney/object-id-str

Allow object-id to convert string to object-id
Test against ragtime 0.3.7
Support 1.1.0
Bump Leiningen requirement to 2.5.0
Remove the deprecation note since it is only confusing these days
Exclude clojure.core/update from monger.collection.

clojure.core/update was introduced in clojure 1.7. To avoid clashing
with monger.collection/update it has to be excluded in the latter
namespace.