Upgrade recipe 6.5

Legend

Every upgrade note has an indication how likely your code will be affected by that change:

• Major Likely to affect your code.
• Minor Unlikely to affect your code (especially if you followed the examples), unless you have hacks.
• Impl detail Will not affect your code, unless you have very deep hacks.
• Recommended Not a backward incompatible change, but you probably want to do this.
• Readme Read this to better understand why the subsequent major changes were made.