add README.md

lesnik512 · lesnik512 · commit a496445ff272 · 2025-06-19T10:36:55.000+03:00
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+# pg-tools
+
+This library provides retry decorators for sqlalchemy and some helpers
+
+Default settings are in [./pg-tools/settings.py](pg_tools/settings.py).
+You can redefine them by environment variables.
