Changing ExceptionInfo processing (spec-assert branch)

[real-mj-song]

Because we're now using s/assert based spec checking, we need to change the error processing. make-msg-info-hashes in messageobj.clj and error-dictionary in error-dictionary.clj are probably two primary methods to be modified.

[real-mj-song]

(reduce 1.1 + [1 2 3])

Example exception message (can be customized if needed):
Spec assertion failed

Example exception hashmap:
{:clojure.spec/problems [{:path [:clojure-experiment.spec_error/first-arg], :pred ifn?, :val 1.1, :via [:clojure-experiment.spec_error/check-fn-any-coll :clojure-experiment.spec_error/check-fn :clojure-experiment.spec_error/check-fn], :in [0]}], :clojure.spec/failure :assertion-failed, :f-name reduce, :args [1.1 #object[clojure_experiment.spec_error$_PLUS_ 0x767e20cf clojure_experiment.spec_error$_PLUS_@767e20cf] [1 2 3]]}