title: What are the differences between Doctrine1 and Doctrine2?
body: <p>I have only started discovering Doctrine and noticed the official documentation points to 1.2 as this seems to be the current stable version. </p>
  
  <p>I also noticed that a lot of people seem to mention Doctrine 2 is a "world of difference" compared to Doctrine 1, but when looking at the <a href="http://www.doctrine-project.org/projects/orm/2.0/docs/whats-new/en">What's new</a> page, I don't really see an extensive changelog. I am guessing this list only shows the newest additions compared to the previous 2.x build. I expected to find a nice roundup of differences after Googling this same question, but I can not seem it.</p>
  
  <p>I am currently plowing through the Doctrine 1 manual, and will do the same for Doctrine 2 as soon as I finish reading it, but a <strong>proper overview of the big changes</strong> would be really appreciated, so my question is:</p>
  
  <p><strong>What are the differences between Doctrine1 and Doctrine2?</strong></p>