I wrote:
Actually, the evolution was really fast, we went through a lot of versions in the very late 80's and early 90's.
To make the point, according to the docs, we were up to version 10 before the end of the eighties, and were up to 17 in early 1992. The integral version numbers are by and large meaningful, communicating one or more significant features. I found Bert on CompuServe in 1988, before CompuServe it was Bert working on his own. Tim Version 17.1, 3/92 Version 17.0, 2/92 Version 16.12, 8/91 Version 16.11, 7/91 Version 16.0, 6/91 Version 15.11, 3/91 Version 15 and 15.1, 12/90 Version 14, 8/90 Version 13.0, 5/90 Version 12.0, 3/90 Version 11.0, 1/90 Version 10.0, 11/89 Version 9.3, 8/89 Version 8.1, 6/89 Version 7.0, 4/89 Version 6.0, 2/89 Version 5.1, 1/89 Version 4.0, 12/88 Version 3.1, 11/88 Version 2.1, 10/23/88 (the "debut" on CIS) Version 2.0, 10/10/88 Version 1.0, 9/88