roadmap.md

@@ -5,3 +5,4 @@ We keep our plans for the future (and the paste) here.
 <!-- update with `ls -d roadmap/*.md | sed 's/.md$//;s/\(.*\)/ * [\1](\1)/'` -->
 
  * [roadmap/2020](roadmap/2020)
+ * [roadmap/2021](roadmap/2021)