Release v1.0.16

[da4089]

v1.0.16 was released today, containing a few accumulated fixes.

• Add missing EXECTYPE constants
• Better conversion to string (How to convert to string? #40)
• Better installation instructions (README - no install instructions #45)
• Add testing for large (64 bit) integer values (Check support for unsigned 64 bit integer values for sequence numbers #52)
• Fixed handling of IntEnum tag values (message: Fix IntEnum tag usage #56)
• Added testing for CPython 3.11 (Released: 2022-10-24)
• Dropped testing for Python 3.6 (EOL: 2021-12-31)

Available via GitHub releases or PyPI.