Require numpy version compatible with all unit tests
Require numpy version compatible with all unit tests

Some unit tests are hyper-sensitive to string formatting and would fail
if the reference has too many (or few) space characters.
This numpy>=1.14 requirement should help everybody's unit tests pass or
fail the same way. There is no other reason for this change.

russel/pychapel,russel/pychapel,chapel-lang/pychapel,russel/pychapel,chapel-lang/pychapel,chapel-lang/pychapel