Python 3.8 was released on October 14th, 2019.
- Added 'Programming Language :: Python :: 3.8' trove classifier.
- Added 'py38' to the tox test matrix.
- Added 'python: 3.8' to the Travis test matrix.
- Removed 'dist: xenial' from Travis configuration; it is now the
default.
- Removed 'dist: trusty' from Travis configuration; it is not longer
necessary.
- Removed 'sudo' from Travis configuration; it is deprecated.
https://docs.python.org/3.8/whatsnew/3.8.html
For library end users, there is no need to install tests alongside the
package itself. This keeps the tests available for development without
adding extra packages to user's site-packages directory. Reduces the
size of the installed package. Avoids accidental execution of test code
by an installed package.