Now editorconfig.el includes this mode.

Squashed commit of the following:

commit 5676a6acbd
Author: 10sr <8slashes+git@gmail.com>
Date:   Thu Feb 4 00:40:58 2016 +0900

    Revert "WIP fix of hl-line"

    This reverts commit ccd229c42b.

commit ae4953d699
Author: 10sr <8slashes+git@gmail.com>
Date:   Thu Feb 4 00:40:56 2016 +0900

    Revert "WIP fix for hl-line"

    This reverts commit bacae367e8.

commit 79b0bd2917
Author: 10sr <8slashes+git@gmail.com>
Date:   Thu Feb 4 00:40:54 2016 +0900

    Revert "WIP experimental fix of hl-line"

    This reverts commit fc2c314f83.