Almost all Polymer elements support up to 1.2.3, but this element explicitly requires Polymer 1.0.0. An example bower install with various Polymer elements and this element:

PSA: we are going to (soon) remove the general configure function, which was the predecessor to value in properties, and is pretty much an unnecessary duplicate API at this point. Configuring default property values should be moved to properties: { prop: { value: ... } }. It also looks like a pattern emerged to bind event listener functions to instance methods in configure; this can just be done in created instead.

How about a line explaining how to install it. Where is it? Can I use bower? What's it called?

Tools that are poorly documented might as well not exist. Why build a homeless shelter and then lock the door?

I prepared a simple example here which illustrates the problem.

Instead of of rendering the whole HTML code I get:

  
 
<meta charset="utf-8">
<title>HTML5 Template</title>
 
 
<p>hello world</p>

Moreover the less / greater signs are rendered as < / &gt;

r = (x < y) + (y > z);

The demo site does not currently work, which I would assume means that the element itself does not work because of the error that is showing in ShadowRenderer.js on line 601?

https://github.com/chjj/marked

This lib support GitHub flavored markdown.

Is this plugin going to remain Polymer-specific for the foreseeable future or do you have an outlook of converting it to a VanillaJS component?

I have added to mark-down element syntax highligting here.

Not sure how to weave components.

<mark-down>
This code block:

def hello
end

is put in <p> element.
</mark-down>