Merge pull request #583 from aidantwoods/fix/atx-headings

Fix trimming of internal #'s in ATX headers

Parsedown.php

@@ -505,7 +505,8 @@ class Parsedown
                 return;
             }
 
-            $text = trim($Line['text'], '# ');
+            $text = trim($Line['text'], '#');
+            $text = trim($text, ' ');
 
             $Block = array(
                 'element' => array(

test/data/atx_heading.html

@@ -7,3 +7,5 @@
 <p>####### not a heading</p>
 <h1>closed h1</h1>
 <p>#</p>
+<h1># of levels</h1>
+<h1># of levels #</h1>

test/data/atx_heading.md

@@ -15,3 +15,7 @@
 # closed h1 #
 
 #
+
+# # of levels
+
+# # of levels # #