Note that this is a breaking API change in the libraries (more information in the README.md). It does not affect the backwards compatibility of the protocol itself.
annotation meta: may need new tag: backwards compatibility of the protocol backwards compatibility for [libraries that use [it?]]
However, this is not working in Python 3, as print has changed from a command to a function, and reduce, filter and map have been declared unpythonic.
In the future, these attributes may expand without the API being versioned. The current attributes are:
To address many issues that have come up over the years, the API in v2 and above is not backwards compatible with the original React addon (v1-stable).