* Change Log
** 0.1.0 <2023-02-26 Sun>
   First release
   Added *source add* function.
** 0.3.2 <2023-02-27 Mon>
   Added *sync one* function.
   Added Rsync wrappper.
   Added fzf_prompt, all_labels for choosing a label of source.
** 0.3.5 <2023-03-01 Wed>
   Added *sync all* function.
   Added all_labels_except for choosing many labels.
   Added fzf function for using all_labels_except.
** 0.4.1 <2023-03-02 Thu>
   Added *source update args* function.
** 0.5.0 <2023-03-03 Fri>
   Added *groups add* function.