Pin dev builds to astropy <5.1a0
This PR fixes #1496 (closed) by pinning the dev
extra to astropy <5.1a0
. This should be reverted once a fix for gwastro/pycbc#4019 is distributed.
This PR fixes #1496 (closed) by pinning the dev
extra to astropy <5.1a0
. This should be reverted once a fix for gwastro/pycbc#4019 is distributed.