Add implicit exports into __init__.py

[ssbarnea]

Fixes: #530

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All committers have signed the CLA.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 88.38%. Comparing base (48ea20b) to head (765d700).
Report is 77 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #531      +/-   ##
==========================================
- Coverage   88.76%   88.38%   -0.38%     
==========================================
  Files          37       37              
  Lines        3685     3798     +113     
  Branches      526      549      +23     
==========================================
+ Hits         3271     3357      +86     
- Misses        281      304      +23     
- Partials      133      137       +4     

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[tony]

Works for me. Sphinx autodoc still seems to work.

[tony]

@ssbarnea I will cut a feature-level package release so you can try this downstream.

[tony]

@ssbarnea This is live in v0.32.0 (PyPI, release notes, changes)