DynamoCoreRuntime 2.19.0 Release
Release Notes: https://github.com/DynamoDS/Dynamo/wiki/Release-Notes#219
Language guide: https://dynamobim.org/wp-content/links/DesignScriptGuide.pdf
Nugets: https://www.nuget.org/packages/DynamoVisualProgramming.Core/2.19.0.6156
You can also download the 2.19.0 release version from https://dynamobuilds.com/