I'm still not out of the rabbit hole of searching for an #OpenSource #PersonalKnowledgeManagement software. 
I'm gonna give a second try to @zettlr tomorrow! Their docs are *surprisingly* user-friendly and they claim to stick to the pure #CommonMark where probable. It's all the while being nice to researchers with citing, inline usage of #TeXLaTeX, #MermaidJS, and pop-over #footnotes. Provision of the simple #PDF export and #Pandoc customization are welcome, too!
But, to be fair, I may be overexaggerating how good #Zettlr is because of my recent disgust with #VendorLocking. In fact, almost anything that closely follows the common spec and is #FreeSoftware might suffice already. Having something as advanced and closer to the roots is certainly refreshing!
