Forces exiting with code 2 when warnings present.

Fixes: #347

To force terminal colors on/off.

Fixes: #348

Temporarily patch the Ext.dom.Element#getAttribute method.

To easily insert current data and link to JSDuck homepage.

Fixes: #343

This is to allow third-party packaging of JSDuck without the
inconvenient dependency on therubyracer gem.

Fixes: #339

Check if jsduck.json exists in current working dir, if yes, then
read configuration from it.

Fixes: #335

Looks better IMHO.

In the case of Touch examples, the separator is no more needed
in this case.

Simply copy over the toolbar code from Touch example component
and generalize the handler for the button.

Just to speed up creating these builds.

Removed from anything that is wrapped by gem when installed by gem.
Fixes #338.

To allow for simpler way to supply the old version warning message.

Just a useful shorthand during development.

Provide just the basic info and reference the wiki guide for details.

The #open and #close methods of HtmlStack now take StringScanner
as input and work at a higher level.

This is currently the latest version.

For some reason the docs app had an hard-coded minimum with.
This severely impacted the usability on iPad where the browser window
width was smaller than our min-width, resulting in text going off the
screen and there being no way to get to it.

For some reason I had always thought \Z is the end of string in Ruby,
but it turns out \z is actually the end of string while \Z will match
right before a newline at the end of string if there happens to be one.

This little difference caused quite an unexpected behavior in one corner
case where the code example is on just a line before the @tag.

Splitting up the humongous Link class into more managable pieces.

The DocFormatter constructor now takes two parameters - relations and
options, instead of passing the relations in separately.  It then
instantiates LinkRenderer and passes it to Link and AutoLink
constructors.

The LinkRenderer is still too heavily coupled to Link and AutoLink,
as these call all the methods of LinkRenderer, but the situation is
much better overall.

Previously all auto-linked classnames had to begin with uppercase char,
but that's not really needed as we only replace namespaced classnames
anyway.

Just an ordinary refactoring.

Both the ImagesDir and ImagesDirSet now have #report_unused method.
No more is the unused images reporting part of #copy method.

Also take care to ignore the icon.png and icon-lg.png files inside
guides - these don't have to be reference by @img tag, but are
used automatically.

Include the Dimensions gem to retrieve image width/height meta-data.

Additional %w an %h placeholders to --img-tpl template.

Achieving this required extensive refactoring of how the images get
processed.  Previously the existance of images was looked up after
all the @img tag had been replaced.  Now the check for existance is
part of expanding the @img tag, so the check happens also for images
in guides, for which the check didn't occour previously as there is
no images copy step in there.

The old Images class has been replaced with ImageDir and ImageDirSet.