[GNU ELPA] Dts-Mode version 1.0

[ELPA update]

Version 1.0 of package Dts-Mode has just been released in GNU ELPA.
You can now find it in M-x list-packages RET.

Dts-Mode describes itself as:

  =======================================
  Major mode for Device Tree source files
  =======================================

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

## Summary:

  This provides basic editing support for DTS files (see
  https://www.devicetree.org/), with the following features:

## Recent NEWS:

In Version 1.0:
- Always use SMIE
- Require Emacs≥24

In Version 0.1.1:
- Add SMIE-based indentation