Misc updates

dotfiles/config/fish/functions/cdgr.fish

@@ -0,0 +1,8 @@
+# Change to the root of the git repository.
+# If not in a git repo, do nothing.
+function cdgr
+    set git_root (git rev-parse --show-toplevel 2>/dev/null)
+    if test -n "$git_root"
+        cd "$git_root"
+    end
+end