[ANNOUNCE] Apache Mahout v0.6.0 rc1 — please help test

[Ryan Huang <hc...@apache.org>]

Hi all,

I've cut **RC1** for Qumat 0.6.0 and qumat-qdp 0.2.0. Both packages are
published on PyPI and the testing issue is open — please help validate
before we move to the formal vote.

**Install:**

```bash
pip install --pre "qumat==0.6.0rc1"
pip install --pre "qumat-qdp==0.2.0rc1"   # CUDA wheels for
py3.10/3.11/3.12, linux-x86_64
```

**Links:**

- PyPI qumat: https://pypi.org/project/qumat/0.6.0rc1/
- PyPI qumat-qdp: https://pypi.org/project/qumat-qdp/0.2.0rc1/
- Git tag:
https://github.com/apache/mahout/releases/tag/mahout-qumat-0.6.0-RC1
- Testing issue (checklist of 130+ changes since 0.5.0):
https://github.com/apache/mahout/issues/1315
- Milestone: https://github.com/apache/mahout/milestone/2

**What to test:** install on your platform, exercise anything you
contributed
or care about, and check off your items on the testing issue. The QDP wheels
need a Linux box with NVIDIA CUDA; the core qumat package is pure-Python and
runs anywhere supported.

I'm targeting **3–5 days** of community testing. If nothing critical
surfaces,
I'll start the formal [VOTE] thread after that.

Thanks to everyone who shipped into this release.

Ryan Huang