Mark wraptext deprecated; use TextWrapper directly in write_po

[akx]

Related to #1120.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 91.27%. Comparing base (d4069ee) to head (194a52f).
Report is 7 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1140      +/-   ##
==========================================
- Coverage   91.28%   91.27%   -0.01%     
==========================================
  Files          27       27              
  Lines        4602     4621      +19     
==========================================
+ Hits         4201     4218      +17     
- Misses        401      403       +2     

Flag	Coverage Δ
macos-12-3.10	90.04% <100.00%> (-0.05%)	⬇️
macos-12-3.11	89.98% <100.00%> (-0.05%)	⬇️
macos-12-3.12	90.19% <100.00%> (-0.01%)	⬇️
macos-12-3.13-dev	89.72% <100.00%> (-0.01%)	⬇️
macos-12-3.8	89.97% <100.00%> (-0.05%)	⬇️
macos-12-3.9	89.97% <100.00%> (-0.05%)	⬇️
macos-12-pypy3.10	90.04% <100.00%> (-0.05%)	⬇️
ubuntu-22.04-3.10	90.06% <100.00%> (-0.05%)	⬇️
ubuntu-22.04-3.11	90.00% <100.00%> (-0.05%)	⬇️
ubuntu-22.04-3.12	90.21% <100.00%> (-0.01%)	⬇️
ubuntu-22.04-3.13-dev	89.74% <100.00%> (-0.01%)	⬇️
ubuntu-22.04-3.8	89.99% <100.00%> (-0.05%)	⬇️
ubuntu-22.04-3.9	89.99% <100.00%> (-0.05%)	⬇️
ubuntu-22.04-pypy3.10	90.06% <100.00%> (-0.05%)	⬇️
windows-2022-3.10	90.18% <100.00%> (-0.05%)	⬇️
windows-2022-3.11	90.12% <100.00%> (-0.05%)	⬇️
windows-2022-3.12	90.33% <100.00%> (-0.01%)	⬇️
windows-2022-3.13-dev	89.86% <100.00%> (-0.01%)	⬇️
windows-2022-3.8	90.11% <100.00%> (-0.05%)	⬇️
windows-2022-3.9	90.11% <100.00%> (-0.05%)	⬇️
windows-2022-pypy3.10	90.18% <100.00%> (-0.05%)	⬇️

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[tomasr8]

Two small nits, otherwise LGTM!

[akx]

@tomasr8 Good comments, thanks! 😄