Hi,
the request for uploading a new upstream version is 2,5 years old and
did not deserved a single response from the maintainer. While this is a
wishlist bug it should be fixed anyway because other packages depend
from newer versions of this library.
Similar situation with #350489 which is tagged patch but no response
from maintainer seems that he has lost interest. Leaving alone a
library unmaintained might result in security issues.
So I wonder whether it is time for an NMU or even a highjack of the
package.