question about cb plugin for JEM, the successor of eventlist

Hi, there was earlier a 3rdparty plugin for eventlist. There is now the successor of eventlist JEM, the adapted plugins work fine on CB 1.9.1 and CB 2.0. There is only a problem of versioning. If we set in xml to version 1.9, in both cb versions the plugin is installed, but in cb 2.0 is a ! mark to say, it's not compatible.
If we set to version 2.0, in cb 1.91 it's not loaded with an error message.

Do we need really to create two identical plugins for this two cb versions?
Or do you have a proposal?
Thank you in advance for a hint

The compatibly check is just checking that the XML version tag is at least 2.0.0. I guess you can just change the XML tag if you wanted, but that by no means makes the code suddenly upgraded. Depending on what you're needing to do most integration plugins have no purpose anymore as CB Auto Actions is capable of handling nearly any case.