Rolling back 1.9.4 release bump

Revert "Version bump for 1.9.5testing"

This reverts commit e221539d29862ee1da63a58f06ff3e4d98361712.

Revert "Version bump for 1.9.4"

This reverts commit f42ad2d0a6cfb903bd2ce55aa4f5b13eadbc4a90.