So…I downloaded Shredder, Mozilla’s development version of Thunderbird, for my…

So…I downloaded Shredder, Mozilla’s development version of Thunderbird, for my @PeppermintOS laptop, which fixed the issue of Thunderbird not opening Chromium when I click a link in an email.  However, Shredder is not compatible with any version of Lightning that I can find, so I’m without my integrated calendar.  #icantwin