[RFC] Attributes v2

Hi all, I want to resurrect Dmitrys Attributes RFC that was rejected for 7.1 in 2016 with a few changes, incorporating feedback from the mailing list back then and from talking to previous no voters. The RFC is at https://wiki.php.net/rfc/attributes_v2 A working patch is at https://github.com/beberlei/php-src/pull/2 though work around the details is still necessary. The RFC contains a section with common criticism and objections to attributes, and I hope to have collected and responded to a good amount already from previous discussions. There is also a fair amount of implementation detail still up for debate, which is noted in "Open Issues". I have pre-committed to one approach, but listed alternatives there. On these issues I am looking for your feedback. greetings Benjamin