anchor.diff:     Linux and OSX clients.
    - *INFO* Client themselves will not automatically be upgraded but should
      continue to work.
  +
  +== Client
  +
  +=== 3.0.0.3 to 3.0.0.5
  +
  +(We skipped a version number, there's no 3.0.0.4)
  +
  +=== 3.0.0.2 to 3.0.0.3
  +
  + - *WARN* A change to OpenSSL required us to sign our CSRs generated during the enrollment process. This wasn't necessary previously and provided no benefit for GRR so we had gained some speed by not doing it. Since new OpenSSL required it, we started signing the CSRs, but it meant that the 3.0.0.3 server will reject any 3.0.0.2 clients that haven't already enrolled (i.e. they will see a HTTP 406).  Old 3.0.0.2 clients that have already enrolled and new 3.0.0.3 clients will work fine. This basically just means that you need to push out new clients at the same time as you upgrade the server. 
   
   = Config Variable Graveyard =
   
  
positive.code: moving quickly. This section tries to identify the key changes and issues to
  watch for when upgrading from one version to another.
  
  == 3.0.0.2 to 3.0.0.3 ==
  
   - *WARN* A change to OpenSSL required us to sign our CSRs generated during the enrollment process. This wasn't necessary previously and provided no benefit for GRR so we had gained some speed by not doing it. Since new OpenSSL required it, we started signing the CSRs, but it meant that the 3.0.0.3 server will reject any 3.0.0.2 clients that haven't already enrolled (i.e. they will see a HTTP 406).  Old 3.0.0.2 clients that have already enrolled and new 3.0.0.3 clients will work fine. This basically just means that you need to push out new clients at the same time as you upgrade the server. 
  
  == 0.2.9 to 3.0.0 ==
  
   - *WARN* After install of new deb you will need to restart the service
     manually.
  
negative.code:  - *INFO* Client themselves will not automatically be upgraded but should
     continue to work.
  
  === 0.2-8 to 0.2-9
  
   - *WARN* After install of new deb you will need to restart the service
     manually.
  