libuninameslist: update to 20200413.

- 2020-Apr-13
    * Version 1.7, Unicode 13.0, French version 1.3 is at Unicode 13.0,
      and including python library wrapper 'uninameslist', version 0.2.
      The French version was updated from version 10.0 to 13.0 shortly
      after Unicode's release - this is a big effort and congratulation
      to the French team! This version updates the main library to also
      include access to libuninameslist-fr. To include this access, you
      need to use './configure --enable-frenchlib'
      This is the first step in adding other languages if anyone wants
      to add more languages.
      The default functions remain as English to retain common grounds
      which is necessary for scripting, and/or file-sharing purposes.

- 2020-Mar-13
    * Version 1.6, Unicode 13.0, French version 1.2 is at Unicode 10.0.
      Unicode has changed cadence to release earlier in the year. This
      contains Official 13.0 NamesList.txt codes released on 2020mar05.

(wiz)