Upgraded ASP.NET CORE to 3.1

Merge pull request #150 from alirizaadiyahsi/dev

Upgraded .net core to v3.0

Merge pull request #144 from alirizaadiyahsi/dev

Aspnet Core 3 updates

Merge pull request #123 from alirizaadiyahsi/dev

v0.4.0

Merge pull request #106 from alirizaadiyahsi/dev

v0.3.0 merge

Merge pull request #94 from alirizaadiyahsi/dev

v0.2.0 release

Typo fixing