Ember CLI Project Updater

Ember CLI Update is a command-line tool designed to help developers update their Ember.js application and addon boilerplate code to newer versions. It differentiates itself significantly from the default `ember init` command by applying a granular diff of changes between blueprint versions, thereby preserving existing user modifications and additions, rather than resetting the project to a clean slate. The tool supports updating official Ember CLI blueprints (e.g., `app`, `addon`, `glimmer`) as well as custom addon blueprints. The current stable version is 3.0.1, released on 2025-10-07. While there isn't a fixed release cadence, updates typically align with major Ember CLI blueprint changes and address bug fixes. Key differentiators include its non-destructive diffing approach, the ability to target specific Ember CLI versions for updates, and integrated support for automatically running applicable codemods to assist with broader code migrations.