[Rails] [ANN] Rails 0.9: Fast development, breakpoints, validations...

[David Heinemeier Hansson]

Another huge upgrade with again close to 100 changes, additions, and 
tweaks. Most importantly are the new faster development environment 
that caches the framework and lets the application reload under both 
WEBrick and Fast CGI. Major is also the new breakpoints that allows you 
to inspect an application during execution, change the model, and 
resume. Additionally, we got a whole new way to do validations that 
extends the domain language of Rails with a wide range of new words.

The changelogs are so long I thought I'd just link to them this time:

* Rails         0.9.0: http://api.rubyonrails.org/files/CHANGELOG.html
* Action Pack   1.0.0: http://ap.rubyonrails.org/files/CHANGELOG.html
* Active Record 1.2.0: http://ar.rubyonrails.org/files/CHANGELOG.html
* Action Mailer 0.5.0: http://am.rubyonrails.org/files/CHANGELOG.html

But more importantly:

* Learn how to upgrade from 0.8.5 to 0.9.0: 
http://rails.hieraki.org/read/book/3
* ...or check the book about 0.9 features: 
http://rails.hieraki.org/read/book/2

This massive release would never have been possible without the killer 
community hanging out at #rubyonrails. Known by such handles as 
noradio, xal, flgr, htonl, bitsweat, and many, many more, they really 
showed what a dedicated group of programmers are capable of. I'm deeply 
honored to be amongst such wonderful people. Thanks, guys!

As also, the easiest way to upgrade the software is: "gem update"
--
David Heinemeier Hansson,
http://www.basecamphq.com/   -- Web-based Project Management
http://www.rubyonrails.org/  -- Web-application framework for Ruby
http://macromates.com/       -- TextMate: Code and markup editor (OS X)
http://www.loudthinking.com/ -- Broadcasting Brain