miscellaneous changes of the last few weeks

gitconfig

@@ -18,6 +18,7 @@
     ps = push
     repourl = config --get remote.origin.url
     shallow = clone --depth=1
+    st = status
     staged = diff --cached
     tags = for-each-ref --sort='*authordate' --format='%(tag)' refs/tags
     undo = reset --soft HEAD^