Modernize and update to work with DNN 9+#1

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RichardHowells wants to merge 3 commits intoerikvb:masterfrom RichardHowells:master

+702-205

Commits on Feb 7, 2020

Updated to build without deprecation warnings using DNN 7.4.2.216 - deleted old backup directories - added .gitignore
Richard Howells
committed
Fixes to get automated packaging and building working
Richard Howells
committed
Update version number. Add release notes. Add cmd file to build the install packages.
Richard Howells
committed