Thread:Talk:Version lifecycle/Re-added 1.18 and 1.20

I believe when people see the information about 1.19, 1.21 - 1.23 they will ask: "Hmm... what happened to 1.20? Was this version accidentally forgotten? Was it purposely removed and for what reason?" - So having it in the list avoids this. Also having 1.18 conveys the message that this version and any prior version is obsolete.