Stack release 15.0 - Status and discussion

[gcomoretto]

Version 15.0 is out now. The announcement is available at:

LSST stack release version 15.0 now available

Version 15.0 of the LSST software stack that includes the LSST Science Pipelines is now available. Extensive documentation including installation instructions, release notes and scientific characterization are available as usual at: https://pipelines.lsst.io This release offers native binary packages for recent flavours of RHEL and MacOS which will speed up installation times for many users. Major changes in functionality and/or interfaces are listed here: https://pipelines.lsst.io/releases/n…