Double Shot #645

It's time to buckle down and deliver some code.

Plugin Authors: Toward a Better Future - I personally do not count breaking every plugin in the Rails ecosystem as "better." But if you've got a plugin that you want or need to make Rails 3 compatible, this is essential information.
Using Bundler in Real Life - Scenario-based workflows for the new Bundler gem.
jQuery with Rails 3 - How to get hooked up to the new unobtrusive javascript bits.
New Feature: Amazon S3 now supports Object Versioning - It'll be interesting to see how long it takes someone to build a blob-based SCM on top of this.
jBreadCrumb - Somewhat busy display aimed at handling deeply nested breadcrumb navigation.
FireQuery - Firebug extension for jQuery development.