Update for [USEPA/SWMM-EPANET_User_Interface] MTP 3

Just a note about the great work being done on the new EPANET and SWMM 5 QGIS interface.
This is the third Minimum Testable Product, released for testing of specific functionality.
This is not a fully functional product and is not suitable for production use.—
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View it on GitHub 

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