Release 2.5
update opam
Revert "Fix overuse of FormData in XmlHttpRequest"

It breaks sending files with CHrome using XmlHttpRequest

This reverts commit 8e0dad8738d210fca2c1df6a65ea3ef3dd52b8ab.
Merge tag '2.5'
Revert "Library: change Js.wrap_meth_callback to allow methods with no parameter."

This reverts commit c56c45f9e2b15d58b8a18b60de1f011c55efbb32.