After 1.19 Release, I'm planning to roll up several changes in the language and its libraries, with some of them which might require some code changes. This is done in order to "cleanup" features and libraries that were added incrementally during the past 2 years of development and prepare the language for future additional platforms.

All these changes can be discussed on the mailing list and you're welcome to submit your own there as well.

The list of changes are available on the haXe Wiki.