[NonGNU ELPA] Haml-Mode version 3.1.10

[ELPA update]

Version 3.1.10 of package Haml-Mode has just been released in NonGNU ELPA.
You can now find it in M-x package-list RET.

Haml-Mode describes itself as:
  Major mode for editing Haml files

More at https://elpa.nongnu.org/nongnu/haml-mode.html