Assignment operator missing (?)

Hi there

It seems the assignment operator `=` is missing among the [operators](https://haxe.org/manual/expression-operators.html).
You can also check in [precedence](https://haxe.org/manual/expression-operators-precedence.html).
Nevertheless `=` is called assignment operator in ["var and final"](https://haxe.org/manual/expression-var.html).