.Net Core 3.0 support (#19)

.Net Core 3.0 support
+semver: feature

Support of Linux and MacOS environments (#14)

* Adapt behavior to linux FileShare limitations

* Update azure-pipelines.yml for linux support

* Fix check timeout

* Update azure-pipelines.yml for publishSymbols on WIndows only

* Update azure-pipelines.yml for ReportGenerator on MacOS

* Rollback latest update of azure-pipelines.yml

* Rollback manually

Add snupkg generation

Merge pull request #6 from manandre:gitversion

More efficient way to handle versionning
Thanks!

First manual version