What happened to CI 3.2.0-dev?

This isn't tech support just a general question. I have been working on version "3.2.0-dev" and came back to the site to upgrade if there was anything new out. It appears that the latest version is only 3.1.6 yet they still have a how to update to 3.2.x page here.
Now that I switched to 3.1.6, I have to add 

PHP Code:

$config['allow_get_array'] = TRUE; 


 to the config file to use get data even though it says it's deprecated, I searched through my 3.2.0-dev version and there is no results for an "allow_get_array" variable anywhere. It's strange because google searches indicate that is a feature from 2010 or so. What happened, did 3.2.0-dev features fit version 4 better and they migrated to a new version?