Closing #141 - var guidance

docs/Guidelines(8th Edition).xml

@@ -246,6 +246,8 @@
   <guideline key="Ch14_6baa967" severity="DO" section="Coding" subsection="Types">DO use System.EventArgs or a type that derives from System.EventArgs for a TEventArgs type.</guideline>
   <guideline key="Ch03_f566c99" severity="AVOID" section="Coding" subsection="Types">AVOID using implicitly typed local variables unless the data type of the assigned value is obvious.</guideline>
   <guideline key="Ch14_3e1089d" severity="CONSIDER" section="Coding" subsection="Types">CONSIDER using System.EventHandler&lt;T&gt; instead of manually creating new delegate types for event handlers unless the parameter names of a custom type offer significant clarification.</guideline>
+  <guideline severity="CONSIDER" section="CODING" subsection="Variables">CONSIDER using var any time that the initialization of the variable clearly shows what the variable will contain.</guideline>
+  <guideline severity="CONSIDER" section="CODING" subsection="Variables">CONSIDER using target-typed new expressions any time that the instance clearly shows its type.</guideline>
   <guideline key="Ch04_9fa9f67" severity="AVOID" section="Coding" subsection="Whitespace">"AVOID omitting braces, except for the simplest of single-line if statements."</guideline>
   <guideline key="Ch04_19bd2d2" severity="DO" section="Coding" subsection="Whitespace">"DO use parentheses to make code more readable, particularly if the operator precedence is not clear to the casual reader."</guideline>
 </Guidelines>

global.json

@@ -0,0 +1,5 @@
+{
+  "sdk": {
+    "version": "3.1.407"
+  }
+}