upgrade to net6.0 and nugt packages issue #1

fix version 4.0.0

adding test attribute and update readme files

adding initial code for azure appconfiguration and also environments …

…options issue #131

completing fixing the issues with k8s files

delete unused files

update appveryro version

Merge pull request #106 from kdcllc/feature/ml-azure-loader

Feature/ml azure loader

issue #90 reverting to support 2.0 and 2.1 netstandard and updating n…

…ullable.

update appveyor version