gwastro/pycbc: PyCBC Release v1.15.0

This is the v1.15.0 release of PyCBC. This release marks the removal of the weave package from PyCBC. With the removal of this package (not available in python3) the python3 compatibility of PyCBC is much improved. At the moment the PyCBC inference package is still not expected to work in python3. However, other parts of the code base should now work correctly. Undoubtedly there will be more patching required before this is true everywhere, please let us know of any problems encountered. A Docker container for this release is available from the pycbc/pycbc-el7 repository on Docker Hub and can be downloaded using the command: docker pull pycbc/pycbc-el7:v1.15.0 On a machine with CVMFS installed, a pre-built virtual environment is available for Red Hat 7 compatible operating systems by running the command: source /cvmfs/oasis.opensciencegrid.org/ligo/sw/pycbc/x86_64_rhel_7/virtualenv/pycbc-v1.15.0/bin/activate A singularity container is available at /cvmfs/singularity.opensciencegrid.org/pycbc/pycbc-el7:v1.15.0 which can be started with the command: singularity shell --home ${HOME}:/srv --pwd /srv --bind /cvmfs --contain --ipc --pid /cvmfs/singularity.opensciencegrid.org/pycbc/pycbc-el7\:v1.15.