Merge pull request #210 from thackl/startup-citation-and-hexsticker

add new hex sticker logo and switch theme

Author: thackl

_pkgdown.yml

@@ -82,5 +82,4 @@ figures:
   fig.height: 5
 template:
   bootstrap: 5
-  params:
-    bootswatch: cosmo
+  bootswatch: sketchy