Haxe 4.0.0-preview.5 release (https://haxe.org/download/version/4.0.0-preview.5/)
main features:
- support Unicode strings properly on all targets
- support for new syntax for key-value iterators and added it to Map
- support inline call() and inline new expressions
- support @:using on type declarations
- support XML literal strings but require them to be marco-processed
- allow enum values without arguments as default function argument values
- reserved operator and overload as keywords