Bug#1049836: Update to newer upstream (>= 0.70.15) to allow python3-pathos to build

[Julian Gilbey]

Package: python3-multiprocess
Version: 0.70.12.2-1
Severity: normal

python3-pathos build-depends (and runtime-depends) on
python3-multiprocess (>= 0.70.15).  Please could you upgrade this
package to a newer upstream version to allow this package to build and
migrate to testing.

Thanks!

   Julian