deal with match_items and sections
deal with match_items and sections

1. new, `phi_zeta_psi_snap000**_tor00**.out`
   ```
   s00-i00, s00-i01 ... -> s00
   s01-i00, s01-i01 ... -> s01
   ...
   ```

2. old
   * si -> si
   * s01 -> s01; s02 -> s02; ...
   * s01, s02 ... -> s

shmilee/gdpy3,shmilee/gdpy3,shmilee/gdpy3,shmilee/gdpy3