Use source instead of dot to load autojump

plugins/autojump/autojump.plugin.zsh

 if [ $commands[autojump] ]; then # check if autojump is installed
   if [ -f $HOME/.autojump/etc/profile.d/autojump.zsh ]; then # manual user-local installation
-    . $HOME/.autojump/etc/profile.d/autojump.zsh
+    source $HOME/.autojump/etc/profile.d/autojump.zsh
   elif [ -f $HOME/.autojump/share/autojump/autojump.zsh ]; then # another manual user-local installation
-    . $HOME/.autojump/share/autojump/autojump.zsh
+    source $HOME/.autojump/share/autojump/autojump.zsh
   elif [ -f $HOME/.nix-profile/etc/profile.d/autojump.sh ]; then # nix installation
-    . $HOME/.nix-profile/etc/profile.d/autojump.sh
+    source $HOME/.nix-profile/etc/profile.d/autojump.sh
   elif [ -f /run/current-system/sw/share/autojump/autojump.zsh ]; then # nixos installation
-    . /run/current-system/sw/share/autojump/autojump.zsh
+    source /run/current-system/sw/share/autojump/autojump.zsh
   elif [ -f /usr/share/autojump/autojump.zsh ]; then # debian and ubuntu package
-    . /usr/share/autojump/autojump.zsh
+    source /usr/share/autojump/autojump.zsh
   elif [ -f /etc/profile.d/autojump.zsh ]; then # manual installation
-    . /etc/profile.d/autojump.zsh
+    source /etc/profile.d/autojump.zsh
   elif [ -f /etc/profile.d/autojump.sh ]; then # gentoo installation
-    . /etc/profile.d/autojump.sh
+    source /etc/profile.d/autojump.sh
   elif [ -f /usr/local/share/autojump/autojump.zsh ]; then # freebsd installation
-    . /usr/local/share/autojump/autojump.zsh
+    source /usr/local/share/autojump/autojump.zsh
   elif [ -f /opt/local/etc/profile.d/autojump.sh ]; then # mac os x with ports
-    . /opt/local/etc/profile.d/autojump.sh
+    source /opt/local/etc/profile.d/autojump.sh
   elif [ $commands[brew] -a -f `brew --prefix`/etc/autojump.sh ]; then # mac os x with brew
-    . `brew --prefix`/etc/autojump.sh
+    source `brew --prefix`/etc/autojump.sh
   fi
 else
   echo 'Please install autojump to enable the plugin (https://github.com/wting/autojump)'