nvPY v2.3.1 released

[平野 勇輝]

Hi everyone!

nvPY v2.3.1 has been released. This release fixes crash issues and
others. For details, please refer to the releases page on the GitHub.

nvPY Installation Guide:
- https://github.com/cpbotha/nvpy/blob/master/docs/installation.rst

Download Pages:
- https://github.com/cpbotha/nvpy/releases/tag/v2.3.1
- https://pypi.org/project/nvpy/2.3.1/


The planned fixes for the next release are listed here:
https://github.com/cpbotha/nvpy/milestones


Many thanks to users and contributors,
yuuki