Rewrite the detection part of the plugin and drop findAndReplaceDOMText.
Add href^="tel:" support.
Add a simple and small blacklist.
Don't initialize the observe before the message "page.observer.start".
Use 'var' elements instead of 'span' elements to prevent clashes with website styling.
Make platform_url work if it's empty. I.e. enforce the default.
Add detection for numbers in iframes.
Add element limit to 2000.
Set mutation element limit to 150.