Version 2.2.3.1

This release fixes the installation on Windows systems and improves the installation guides in the official documentation and installation process.

The following example shows how to install jaxlib after users install and import brainpy:

>>> import brainpy
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Users\adadu\miniconda3\envs\py3test\lib\site-packages\brainpy\__init__.py", line 10, in <module>
    raise ModuleNotFoundError(

BrainPy needs jaxlib, please install jaxlib.

1. If you are using Windows system, install jaxlib through

   >>> pip install jaxlib -f https://whls.blob.core.windows.net/unstable/index.html

2. If you are using macOS platform, install jaxlib through

   >>> pip install jaxlib -f https://storage.googleapis.com/jax-releases/jax_releases.html

3. If you are using Linux platform, install jaxlib through

   >>> pip install jaxlib -f https://storage.googleapis.com/jax-releases/jax_releases.html

4. If you are using Linux + CUDA platform, install jaxlib through

   >>> pip install jaxlib -f https://storage.googleapis.com/jax-releases/jax_cuda_releases.html

Note that the versions of "jax" and "jaxlib" should be consistent, like "jax=0.3.14", "jaxlib=0.3.14".

More detail installation instruction, please see https://brainpy.readthedocs.io/en/latest/quickstart/installation.html#dependency-2-jax  

Hope this information may help the installation of BrainPy much easiler.