Bump version to 7.3.0

Author: chrisuthe

src/Sendspin.SDK/Sendspin.SDK.csproj

@@ -8,7 +8,7 @@
 
     <!-- NuGet Package Metadata -->
     <PackageId>Sendspin.SDK</PackageId>
-    <Version>7.2.1</Version>
+    <Version>7.3.0</Version>
     <Authors>Sendspin Contributors</Authors>
     <Company>Sendspin</Company>
     <Product>Sendspin SDK</Product>