- Update to 4.3.0
* New features:
* support defaults for type parameters
* support @:op(a()) on abstracts
* support abstract keyword to reference the abstract
* support static var at expression-level
* support ?. safe navigation operator
* added ?? null coalescing operator
* add -w compiler option to configure warnings
* added new error reporting modes
* support custom metadata and defines
* Standard Library:
* added atomic operations to several targets
* added Vector.fill
* added sys.thread.Condition and Semaphore
* added Http.getResponseHeaderValues to deal with multiple values of same key
* make Sys.environment consistent between targets
* consistent way to unset environment variables with Sys.putEnv
* Various improvements and bug fixes detailed in
https://github.com/HaxeFoundation/haxe/blob/4.3.0/extra/CHANGES.txt
* Update haxelib to 4.1.0
* Added support for documenting custom defines and metadata (#573)
* Fixed a segmentation fault on Linux systems