Simple.OpsGenieApi 3.1.0

dotnet add package Simple.OpsGenieApi --version 3.1.0
NuGet\Install-Package Simple.OpsGenieApi -Version 3.1.0
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="Simple.OpsGenieApi" Version="3.1.0" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add Simple.OpsGenieApi --version 3.1.0
#r "nuget: Simple.OpsGenieApi, 3.1.0"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install Simple.OpsGenieApi as a Cake Addin
#addin nuget:?package=Simple.OpsGenieApi&version=3.1.0

// Install Simple.OpsGenieApi as a Cake Tool
#tool nuget:?package=Simple.OpsGenieApi&version=3.1.0

Simple Opsgenie Api Client for Alerts API

Product Compatible and additional computed target framework versions.
.NET Framework net47 is compatible.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

This package has no dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
3.1.0 8,391 5/25/2018
3.0.0 936 5/24/2018
2.0.0 3,015 7/21/2015
1.0.0 1,228 7/13/2015

2018 v3.1 - Async methods, 4.7 framework, opsgenie api v2  
2015 v2 - Now without any depedency on external libraries.   
This does mean you need to provide your own JsonSerializer implementation.   
See unittests and cli in github repo for example with servicestack.text