- Removed the Update and GetOrDefault extension methods (they wer…

…e unused).

 - Renamed `DictionaryExtensions` to `KeyValuePairExtensions`, since nothing in that file extends dictionary any more!

LLama/Extensions/KeyValuePairExtensions.cs

@@ -0,0 +1,24 @@
+using System.Collections.Generic;
+
+namespace LLama.Extensions
+{
+    /// <summary>
+    /// Extensions to the KeyValuePair struct
+    /// </summary>
+    public static class KeyValuePairExtensions
+    {
+        /// <summary>
+        /// Deconstruct a KeyValuePair into it's constituent parts.
+        /// </summary>
+        /// <param name="pair">The KeyValuePair to deconstruct</param>
+        /// <param name="first">First element, the Key</param>
+        /// <param name="second">Second element, the Value</param>
+        /// <typeparam name="TKey">Type of the Key</typeparam>
+        /// <typeparam name="TValue">Type of the Value</typeparam>
+        public static void Deconstruct<TKey, TValue>(this KeyValuePair<TKey, TValue> pair, out TKey first, out TValue second)
+        {
+            first = pair.Key;
+            second = pair.Value;
+        }
+    }
+}