Drop support for Clojure 1.5.1 and 1.6.0

Author: weavejester

project.clj

@@ -3,16 +3,14 @@
   :url "https://github.com/ring-clojure/ring-codec"
   :license {:name "The MIT License"
             :url "http://opensource.org/licenses/MIT"}
-  :dependencies [[org.clojure/clojure "1.5.1"]]
+  :dependencies [[org.clojure/clojure "1.7.0"]]
   :plugins [[lein-codox "0.10.7"]]
   :codox
   {:output-path "codox"
    :source-uri "http://github.com/ring-clojure/ring-codec/blob/{version}/{filepath}#L{line}"}
-  :aliases {"test-all" ["with-profile" "default:+1.6:+1.7:+1.8:+1.9:+1.10" "test"]}
+  :aliases {"test-all" ["with-profile" "default:+1.8:+1.9:+1.10" "test"]}
   :profiles
   {:dev  {:dependencies [[criterium "0.4.6"]]}
-   :1.6  {:dependencies [[org.clojure/clojure "1.6.0"]]}
-   :1.7  {:dependencies [[org.clojure/clojure "1.7.0"]]}
    :1.8  {:dependencies [[org.clojure/clojure "1.8.0"]]}
    :1.9  {:dependencies [[org.clojure/clojure "1.9.0"]]}
    :1.10 {:dependencies [[org.clojure/clojure "1.10.3"]]}})