Significant code changes; linting, typing etc; limited functionality …

…changes

v1.0.1 version bump (same code as 'v1.0+14+g22e9ad2')

Python3 release for Debian Bullseye base.

Major version bump for Bullseye pkg.

v16.x release (py2).

Python3 RC.

Last v15.x specific release.

final release of autoversion for TurnKey v15.x

v0.9.2 Release Notes

====================

* critical bugfix: corrected illegal use of `:' in untagged autoversions

v0.9.1 Release Notes

====================

* refactored autoversion heavily for increased readability/maintainability

* implemented precaching optimizations (20X improvement for batch lookups)

  By eliminating nearly all per-lookup execution overhead, dramatically
  increases the improvement of batch lookups.