As there are many mods which are backwards compatible, this info mostly can be found easily by just looking into the .version file where it says what is the minimum and maximum supported KSP version.
And many devs today create mods which are backwards compatible over several versions and not only the latest KSP release - as there are many players who use older versions, especially RSS RO RP-1 players.
- with the lack of a .version file, how compatible is this mod?
- could you add a .version file?