Announcement: Dropping support for Python 3.5

[amykyta3]

Python 3.5 has been officially deprecated since 2020-09-13 However, some older operating systems which use py3.5 by default have not reached their EOL yet. For example - Ubuntu 16.04 (which uses py3.5 by default) is still has extended maintenance until 2026

For this reason, I'm motivated to preserve support for Python3.5 for as long as I can, but this may become difficult as dependencies drop their support as well. Discontinuing support for py3.5 also lets me make better use of features that were introduced in Python 3.6.

If you are still actively using Python 3.5, I strongly recommended you upgrade to a newer version! All the SystemRDL tools are forward-compatible with the latest versions of Python.