Are you using PHPExcel 1.9(dev) in production?

Question

PHP

Hello.
In the new version, they promised a lot of ivy, like namespaces and the main performance increase.
Are you using PHPExcel 1.9 on real websites or web applications?
Oddly enough, there is practically no information on the web about comparisons between versions.

Answer 1

Of course not.
By the time of release, it can change the API several times.