title: Getting software version numbers right. v1.0.0.1
body: <p>I distribute software online, and always wonder if there is a proper way to better define version numbers.</p>
  
  <p>Let's assume A.B.C.D in the answers.  When do you increase each of the components?</p>
  
  <p>Do you use any other version number tricks such as D mod 2 == 1 means it is an in house release only?</p>
  
  <p>Do you have beta releases with their own version numbers, or do you have beta releases per version number?</p>