Minor changes to the simple_pv code to build on Debian 8.
Ensure simple_pv is marked as C++11, add a make_unique (which is missing in C++11).
Maintenance will be performed on git.ligo.org, containers.ligo.org, and docs.ligo.org on Tuesday 14 May 2024 starting at approximately 9am PDT. It is expected to take around twenty minutes and there will be several periods of downtime throughout the maintenance. Please address any comments, concerns, or questions to the helpdesk.
Ensure simple_pv is marked as C++11, add a make_unique (which is missing in C++11).