v0.2.0

Supports Python 3.10 and up (previously 3.13 only), so this is the first release
installable on the interpreters most deployments are actually running.

• requires-python lowered to >=3.10, the floor the dependencies allow — typer
  and pdfminer.six both require it.
• The one version-dependent construct, enum.StrEnum (3.11+), is shimmed in
  ace_bacnet_devices._compat. A bare class Foo(str, Enum) is not equivalent —
  it stringifies as Foo.BAR rather than bar, and these values are written into
  JSON and generated source — so the shim pins __str__/__format__ to str as
  the standard library does. Every enum spelling, all six bundled definitions as
  JSON, and the generated legacy module are byte-identical on 3.10/3.11/3.12/3.13.
• CI runs lint, type checks and tests as a matrix over all four versions, and the
  wheel smoke test installs on 3.10 so a wheel that cannot install at the declared
  floor fails before release.
• The legacy bacpypes adapter is now verified against the real stack rather than
  stubs: asyncore still exists on 3.10/3.11, so bacpypes installs there. All 53
  constrained datatypes are encoded and compared byte for byte against the primitive
  each subclasses, and 40 declared maxima are confirmed to reject out-of-range
  values. These tests skip on 3.12+.

No change to the bundled vendor definitions: 617 proprietary properties across
eight BACnet vendor ids.