Chaquopy version 7.0.2

Changes:

Runtime Python version is now 3.8.1.
- See compatibility notes for Python 3.7 and Python 3.8.
- Most native packages have been updated to a more recent version. If you’ve used specific version numbers in a build.gradle or requirements.txt file, you may need to change them. See the repository index for a complete list.
- All Python standard library modules are now supported except those in this list. In particular, support has been added for bz2, importlib.metadata, importlib.resources and lzma.
Android Gradle plugin version 3.6 is now supported, and version 3.1 is no longer supported.
buildPython must now be at least Python 3.5.
Expose Java API using api configuration so it’s available to dynamic feature modules.
Update CA bundle to certifi 2019.9.11.
Fix “cannot create a consistent method resolution order” error when using androidx.
Fix a deadlock involving the Java API.
Improve local caching of packages which aren’t available as wheels.
Reduce some temporary filename lengths to avoid the Windows 260-character limit.
Improve startup speed.

The following packages have been added to the repository since the previous version: