Changelog

Version 3.0.2

Inferring breadcrumbs is now supported on all instances of objects that respond to model_name.

Breadcrumbs can now be inferred if you pass in an ActiveRecord model instance. E.g. breadcrumb @product is short for breadcrumb :product, @product.

Support for defining breadcrumbs using Gretel::Crumbs.layout do ... end in an initializer has been removed. See the readme for details on how to upgrade.
Breadcrumbs rendering is now done in a separate class to unclutter the view with helpers. The public API is still the same.
Support for rendering the breadcrumbs in different styles like ul- and ol lists, and for use with Twitter Bootstrap. See the :style option in the readme for more info.
The :show_root_alone option is now called :display_single_fragment and can be used to display the breadcrumbs only when there are more than one link, also if it is not the root breadcrumb.
Links yielded from <%= breadcrumbs do |links| %> now have a current? helper that returns true if the link is the last in the trail.
New view helper: parent_breadcrumb returns the parent breadcrumb link (with #key, #text, and #url). This can for example be used to create a dynamic back link. You can supply options like :autoroot etc. If you supply a block, it will yield the parent breadcrumb if it is present.

Breadcrumbs are now configured in config/breadcrumbs.rb and config/breadcrumbs/**/*.rb and reloaded when changed in the development environment instead of the initializer that required restart when configuration changed.

Totally rewritten for better structure.
options[:autoroot] is now true by default which means it will automatically link to the :root breadcrumb if no parent is specified.
Now accepts options[:class] for specifying the CSS class for the breadcrumbs container. Default: "breadcrumbs".
Now accepts options[:current_class] for specifying the CSS class for the current link / span. Default: "current".
options[:link_last] was deprecated in a previous version and is now removed. Use options[:link_current] instead.
The link method in crumb :xx do ... end no longer takes HTML options. The method for this is now by building the breadcrumbs manually (see the readme).
No longer supports procs for link text or URL as this is unnecessary when you can pass arguments to the block anyway.
It now accepts multiple arguments for crumb and parent (see the readme).
Breadcrumbs are now rendered with <%= breadcrumbs %>, although you can still use the old <%= breadcrumb %> (without s).
You can now access view helpers from inside Gretel::Crumbs.layout do .. end.