Start on SelectList, a common base class for filterable lists

Like autocompleter, fuzzy-finder, and event palette

.pairs

@@ -3,6 +3,7 @@ pairs:
   cj: Corey Johnson; cj
   dg: David Graham; dgraham
   ks: Kevin Sawicki; kevin
+  jc: Jerry Cheung; jerry
 email:
   domain: github.com
 #global: true