Release Notes 1.6

Changelog

Enhancement	Significantly reduced memory usage of SVG images
Enhancement	Exposed the image cache inspection API to Unity3D
Enhancement	Added support for DateTime struct in Unity3D
Enhancement	Added support for read-only List in Unity3D
Feature	Support for Unreal Engine 4 4.24
Fix	Fixed drawing order for combinations of elements with z-index and positioning
Fix	Fixed several issues with stroking paths in SVG images
Fix	Fixed clipping child elements when parent has border-radius
Fix	Fixed text selection and caret placement on transformed text
Fix	Firing events on wrong elements in certain cases
Fix	Fixed text alignment with text-overflow
Fix	Fixed parsing floating point numbers in stylesheets on non-US locale POSIX based platforms
Fix	Exposed UnbindCall and UnregisterEvent to Unity3D
Fix	Exposed ITextTransformationManager to Unity3D
Fix	Fixed exposing FString on POSIX based platforms

Fix	Fixed running the inspector in Google Chrome version 80.

Feature	Support for WebSockets (see the documentation how to use them)
Feature	Support for Android x86_64
Feature	Moved Unity3D packages to use the Unity3D Package Manager
Enhancement	Improved support for nullable types in Unity3D
API	Moved COHTML_BUILD_VERSION and COHTML_SDK_VER to `<cohtml/Revision.h>` header