You can read the Early Access topics and learn it yourself. I don’t really remember every version and in fact I skipped version 06, but I don’t know why.
*Early Access version 01
*Early Access version 02
*Early Access version 03
*Early Access version 04
*Early Access version 05
*Early Access version 06
*Early Access version 07
*Early Access version 08
*Early Access version 09
You can also search with magnifier icon for topics that include word “impressions” - InterAction Studios told us (In Early Access 01 topic) that they want to know our first honest hour of playing CIU. Here are mine First impressions