v5.0.1: fix hang after 8 hours on certain platforms

This release fixes issue #968, and is a recommended update for all users. There are no functional changes.

What's Changed

• Fix hang after 8 hours with certain compilers by @terrillmoore in #987
• Merge v5.0.1 release changes to head by @terrillmoore in #990

Full Changelog: v5.0.0...v5.0.1