Option to not include image size attributes

[drewm]

When inserting an image, Textile attempts to get the image dimensions and insert width and height attributes (in the fImage() function)

if ($this->isRelUrl($url)) {
    $size = @getimagesize(realpath($this->doc_root.ltrim($url, $this->ds)));
}

if ($size) {
    $atts .= " $size[3]";
}

This is a hindrance for responsive web design layouts, where CSS is used to scale images to their containing element. In that scenario, the user doesn't want the width and height attributes added by Textile.

It would be great if there was a runtime option to specify whether to insert size attributes on image tags, defaulting to the current behaviour.

[netcarver]

Fixed in a 2.5 based branch along with #101. Will become part of v2.5.1 and v3.5.1.