Adding the CBR extension.

Author: DougSalt

extensions/cbr-1.0.1.jar

@@ -40,6 +40,20 @@ Unlike NetLogo’s lists and strings, arrays are “mutable”. That means that
     homepage: "https://github.com/garypolhill/netlogo-bitstring/blob/nl6/README.md"
     downloadURL: "https://raw.githubusercontent.com/NetLogo/NetLogo-Libraries/6.1/extensions/bitstring-2.1.0.zip"
   }
+  {
+    name: "Case based reasoning"
+    codeName: "cbr"
+    shortDescription: "A case based reasoner extension"
+    longDescription: """A case base reasoner that provides the necessary
+keywords to implement a case based reasoner consistently. A case base consists
+of the riple: state,decision,outcome. This framework can return single or
+multiple triples from the case base which match a given state and decision
+using the the inbuilt distance function or a user defined function. Command to dynamically modify the case base are also provided, such as addition and deletion of specific cases based on age, or size of case base.
+"""
+    version: "1.0.1"
+    homepage: "https://github.com/DougSalt/cbr.git"
+    downloadURL: "https://raw.githubusercontent.com/NetLogo/NetLogo-Libraries/6.1/extensions/cbr-1.0.1.zip"
+  }
   {
     name: "CogLogo"
     codeName: "coglogo"