test: add test for emphasis case

dist/showdown.js

@@ -1,4 +1,4 @@
-;/*! showdown 29-01-2017 */
+;/*! showdown 30-01-2017 */
 (function(){
 /**
  * Created by Tivie on 13-07-2015.

test/cases/emphasis.html

@@ -34,3 +34,5 @@
 <p>escaped word<strong>*with*</strong>bold asterixs</p>
 <p>foo<strong>bar</strong>baz</p>
 <p>foo<strong>bar</strong>baz</p>
+<p>this is <strong><a href="//google.com">imbued link with strong</a></strong></p>
+<p>this is <strong><a href="//google.com">imbued link with strong</a></strong></p>

test/cases/emphasis.md

@@ -68,3 +68,7 @@ escaped word**\*with\***bold asterixs
 foo**bar**baz
 
 foo__bar__baz
+
+this is **<a href="//google.com">imbued link with strong</a>**
+
+this is __<a href="//google.com">imbued link with strong</a>__