Document recent copyfile change and bump version

[jborean93]

No description provided.

[codecov]

Codecov Report

Merging #187 (765f4f7) into master (bbdca29) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #187   +/-   ##
=======================================
  Coverage   99.09%   99.09%           
=======================================
  Files          23       23           
  Lines        5063     5063           
=======================================
  Hits         5017     5017           
  Misses         46       46           

Flag	Coverage Δ
macOS	68.22% <ø> (ø)
py3.10	99.07% <ø> (ø)
py3.6	99.07% <ø> (ø)
py3.7	99.07% <ø> (ø)
py3.8	99.07% <ø> (ø)
py3.9	99.09% <ø> (ø)
ubuntu	96.77% <ø> (ø)
windows	99.00% <ø> (ø)
x64	99.07% <ø> (-0.02%)	⬇️
x86	99.00% <ø> (ø)

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Impacted Files	Coverage Δ
smbclient/_os.py	98.48% <ø> (ø)

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