Added option 'mermaid_args' to be able to specify arguments sent to mermaid-cli.
Expanded mermaid HTML element detection. Now accepts any HTML element with a 'mermaid' or 'language-mermaid' class and at most one child HTML element.
<pre class="mermaid">
<code class="mermaid"><pre>
<div class="mermaid">
Added option 'mermaid_img_scale_reduction' to counter the increase in visual size caused by mmdc argument --scale. Using both at the same value (i.e., 4) allows higher resolution diagrams at the native size.
Suppress mmdc sub-process chatter when using '--quiet'
<pre class="mermaid"><code class="mermaid"><pre><div class="mermaid">--scale. Using both at the same value (i.e., 4) allows higher resolution diagrams at the native size.