Nope, the project is dead.
You're on your own for SQL 2008R2 and SQL 2012.
(for example, you cannot deploy shared datasets with RSScripter)
It would be nice if the source code was released, so someone else could upgrade the tool to the latest versions.
Need an answer? No, you need a question
My blog at https://sqlkover.com.
MCSE Business Intelligence - Microsoft Data Platform MVP