Making inlineProjections a Rewriter
Simplify the Rewritable interface for rewriters that do not change the type of the root node
Return * fails if there are no indentifiers in scope
Merge pull request #2552 from davidegrohmann/fix-return-star-no-ids

Return * fails if there are no indentifiers in scope
Merge pull request #2551 from davidegrohmann/rewriter-improvements

Rewriting improvements
Merge remote-tracking branch 'upstream/2.1-maint' into shortest-p