Update version to 3.0.0

Author: rezigned

Omise/Omise.csproj

@@ -3,7 +3,7 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <PackageId>Omise</PackageId>
-    <PackageVersion>2.7.8</PackageVersion>
+    <PackageVersion>3.0.0</PackageVersion>
     <Authors>Chakrit Wichian &lt;[email protected]&gt;</Authors>
     <PackageIconUrl>https://cdn.omise.co/assets/frontend-images/omise-logo.png</PackageIconUrl>
     <PackageLicenseUrl>https://github.com/omise/omise-dotnet/blob/master/LICENSE</PackageLicenseUrl>