Merge pull request #2865 from moofish32/doc/v8-compatibility

Raft Protocol vs Consul Protocol Doc Clarification

website/source/docs/compatibility.html.markdown

@@ -36,18 +36,9 @@ For more details on the specifics of upgrading, see the [upgrading page](/docs/u
     <th>Protocol Compatibility</th>
   </tr>
   <tr>
-    <td>0.1</td>
+    <td>0.1 - 0.3</td>
     <td>1</td>
   </tr>
-  <tr>
-    <td>0.2</td>
-    <td>1</td>
-  </tr>
-  <tr>
-    <td>0.3</td>
-    <td>1, 2</td>
-  </tr>
-  <tr>
     <td>0.4</td>
     <td>1, 2</td>
   </tr>
@@ -60,7 +51,10 @@ For more details on the specifics of upgrading, see the [upgrading page](/docs/u
     <td>1, 2, 3</td>
   </tr>
   <tr>
-    <td>0.7</td>
+    <td>0.7 - 0.8</td>
     <td>2, 3. Will automatically use protocol > 2 when speaking to compatible agents</td>
   </tr>
 </table>
+
+-> **Note:** Raft Protocol is versioned separately, but maintains compatibility with at least one prior version. See [here](https://www.consul.io/docs/upgrade-specific.html#raft-protocol-version-compatibility) for details.
+