Add failing test cases

test/data/code_block.html

@@ -5,4 +5,9 @@ echo $message;</code></pre>
 <hr />
 <pre><code>&gt; not a quote
 - not a list item
-[not a reference]: http://foo.com</code></pre>
+[not a reference]: http://foo.com</code></pre>
+<hr />
+<pre><code>foo
+
+
+bar</code></pre>

test/data/code_block.md

@@ -7,4 +7,11 @@
 
     > not a quote
     - not a list item
-    [not a reference]: http://foo.com
+    [not a reference]: http://foo.com
+
+---
+
+    foo
+
+
+    bar

test/data/fenced_code_block.html

@@ -11,4 +11,8 @@ echo "Hello World";
 &lt;a href="http://auraphp.com" &gt;Aura Project&lt;/a&gt;</code></pre>
 <pre><code>the following isn't quite enough to close
 ```
-still a fenced code block</code></pre>
+still a fenced code block</code></pre>
+<pre><code>foo
+
+
+bar</code></pre>

test/data/fenced_code_block.md

@@ -28,4 +28,11 @@ echo "Hello World";
 the following isn't quite enough to close
 ```
 still a fenced code block
-````
+````
+
+```
+foo
+
+
+bar
+```