Calling:
in a terminal should help, alternatively System Settings -> Privacy & Security -> "Open Anyway" should work too. (unless Apple changed it again, which seems to be the case)
(assuning you copies the Hybrid.app to your /Applications folder, otherwise you need to adjust the path)
Cu Selur
xattr -dr com.apple.quarantine "/Applications/Hybrid.app"(assuning you copies the Hybrid.app to your /Applications folder, otherwise you need to adjust the path)
Cu Selur
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Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.

