add socks proxy, finish helm-org-agenda-files-headings

dotfiles/lib/shellenv/functions.sh

@@ -1,4 +1,4 @@
-shell_contains () {
+function shell_contains () {
   local e
   for e in "${@:2}"; do [[ "$e" == "$1" ]] && return 0; done
   return 1
@@ -284,3 +284,8 @@ function timestamp {
 function parse_timestamp {
     date -d "@$1"
 }
+
+function refresh_config {
+    source ~/.zshenv
+    source ~/.zshrc
+}