Add zettelkast project

rauhala.info/projects/2021-01-21-zettelkast.md

@@ -0,0 +1,17 @@
+---
+title: zettelkast
+github: https://github.com/MasseR/zettelkast
+issues: https://github.com/MasseR/zettelkast/issues
+badge: https://github.com/MasseR/zettelkast/workflows/Test/badge.svg
+---
+
+Command-line tool for managing zettelkast documents. The tool primarily focuses
+on providing unique ids and showing a graph of document connections. It tries
+to be as unintrusive as possible.
+
+```
+$ zettelkast help
+$ zettelkast new
+$ zettelkast list
+$ zettelkast open <id>
+```