Speed improvements
TypeScript 3.5 introduces several optimizations around type-checking and incremental builds. 

Version 8 of Angular — Smaller bundles, CLI APIs, and alignment with the ecosystem 

Firefox 67 better protects your privacy online with new Content Blocking options to avoid known cryptominers and fingerprinters. 

TypeScript 3.5 introduces several optimizations around type-checking and incremental builds. 

.NET Core May 2019 Updates – 1.0.16, 1.1.14, 2.1.11 and 2.2.5 

Announcing ML.NET 1.0 

Rider 2019.1 Has Arrived! 

Support for the recently released Visual Studio 2019 RTM, including but not limited to supporting the “async packages auto-load” API in Visual Studio 2019. 

The tooltip that shows the expression type (Cmd/Ctrl-hover) in JavaScript and TypeScript files now has a syntax highlighting. 

AutoMapper 8.1 adds a major new feature - attribute-based maps. Attribute maps let you easily declare maps on destination types when you have straightforward scenarios. Instead of: 

public class OrderProfile {  
    public OrderProfile() {
        CreateMap<Order, OrderIndexModel>();
        CreateMap<Order, OrderEditModel>();
        CreateMap<Order, OrderCreateModel>();
    }
}

You can declare your type maps directly on the destination types themselves with AutoMapAttribute: 

[AutoMap(typeof(Order))]
public class OrderIndexModel {  
    // members
}

[AutoMap(typeof(Order))]
public class OrderEditModel {  
    // members
}

[AutoMap(typeof(Order))]
public class OrderCreateModel {  
    // members
}