Bump beta version

Restore existence of protected API methods

Parsedown.php

@@ -17,7 +17,7 @@ class Parsedown
 {
     # ~
 
-    const version = '1.8.0-beta-4';
+    const version = '1.8.0-beta-5';
 
     # ~
 
@@ -391,6 +391,11 @@ class Parsedown
         }
     }
 
+    protected function blockCodeComplete($Block)
+    {
+        return $Block;
+    }
+
     #
     # Comment
 
@@ -508,6 +513,11 @@ class Parsedown
         return $Block;
     }
 
+    protected function blockFencedCodeComplete($Block)
+    {
+        return $Block;
+    }
+
     #
     # Header