[PATCH v3] releasenotes: add custom admonitions support for release notes

[Yuya Nishihara]

On Sun, 09 Jul 2017 19:04:33 +0200, Rishabh Madan wrote:
> # HG changeset patch
> # User Rishabh Madan <rishabhmadan96 at gmail.com>
> # Date 1499619850 -7200
> #      Sun Jul 09 19:04:10 2017 +0200
> # Node ID 5f22d3d43d36d46cea98c86b2a49eee2d323fd9e
> # Parent  4672db164c986da4442bd864cd044512d975c3f2
> releasenotes: add custom admonitions support for release notes

Do you have time to make V4 in this weekend? If you don't, I'll queue this
version as it seems good enough.