Hi,
I would like to search elements to remove Gravit metadata and its base64 (<code>&lt;![CDATA[...==]]&gt;</code>) to optimise the SVG files. Here are:
<pre><code>&lt;gravitDesigner:gravitElementRef xmlns:gravitDesigner="http://ns.gravit.io/" xlink:href="#...."/&gt;
</code></pre><pre><code>&lt;gravitDesigner:gravitGraphicSource xmlns:gravitDesigner="http://ns.gravit.io/" id="..." version="1"&gt;
 &lt;![CDATA[...==]]&gt;
&lt;/gravitDesigner:gravitGraphicSource&gt;
</code></pre>

Hi,

I would like to search elements to remove Gravit metadata and its base64 (`<![CDATA[...==]]>`) to optimise the SVG files. Here are:

```
<gravitDesigner:gravitElementRef xmlns:gravitDesigner="http://ns.gravit.io/" xlink:href="#...."/>
```

```
<gravitDesigner:gravitGraphicSource xmlns:gravitDesigner="http://ns.gravit.io/" id="..." version="1">
 <![CDATA[...==]]>
</gravitDesigner:gravitGraphicSource>
```

Sorry for tagging you, but I would like your help, <a class="user-mention" href="/@ibowankenobi">Ibrahim Tanyalcin</a>, <a class="user-mention" href="/@tayyabhanif">Tayyab Hanif</a>, <a class="user-mention" href="/@PatrikLindstrom">Patrik Lindström</a>, <a class="user-mention" href="/@mverleg">Mark</a> and <a class="user-mention" href="/@lichtjaeger">Peter Scheler</a>.

Sorry for tagging you, but I would like your help, @[Ibrahim Tanyalcin](@ibowankenobi), @[Tayyab Hanif](@tayyabhanif), @[Patrik Lindström](@PatrikLindstrom), @[Mark](@mverleg) and @[Peter Scheler](@lichtjaeger). 

What is the regex for these complex metadata which contain elements, ids, XML and base64?