Merge pull request #211 from pyswmm/bugfix/210 #147

Job	Run time
Unit Tests (3.7, ubuntu-latest)	1m 4s
Unit Tests (3.7, windows-latest)	3m 54s
Unit Tests (3.7, macos-latest)	1m 45s
Unit Tests (3.8, ubuntu-latest)	48s
Unit Tests (3.8, windows-latest)	1m 59s
Unit Tests (3.8, macos-latest)	1m 34s
Unit Tests (3.9, ubuntu-latest)	48s
Unit Tests (3.9, windows-latest)	1m 49s
Unit Tests (3.9, macos-latest)	57s
Unit Tests (3.10, ubuntu-latest)	56s
Unit Tests (3.10, windows-latest)	2m 34s
Unit Tests (3.10, macos-latest)	1m 6s
Publish Python 🐍 distributions 📦 to PyPI and TestPyPI	19s
	19m 33s

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