[GNU ELPA] Rnc-Mode version 0.3

[ELPA update]

Version 0.3 of package Rnc-Mode has just been released in GNU ELPA.
You can now find it in M-x package-list RET.

Rnc-Mode describes itself as:
  Emacs mode to edit Relax-NG Compact files

More at https://elpa.gnu.org/packages/rnc-mode.html