Release 4.4.0 (#437)

- Adds recording of telemetry to ApiClient
- Adds network token destination
- Updates AFT properties
- Updates payment contexts
- Updates tax rate
- Updates account holder and payment responses
- Updates PMC Applepay and Googlepay
- Updates disputes
- Updates readme file
- Fixes int nullables and tests

Author: armando-rodriguez-cko

Directory.Build.props

@@ -1,5 +1,5 @@
 <Project>
     <PropertyGroup>
-        <Version>4.3.8</Version>
+        <Version>4.4.0</Version>
     </PropertyGroup>
 </Project>