Version 2.5.0

Changes in this release:

• Upgrades Python version from 3.6 to 3.8 (#1071)
• Completes configurability of RabbitMQ port (#1086)
• Fixes display error with harvest stats (thanks, @sebastian-nagel!) (#1089)

Documentation updates:

• Updates directory ownership options in installation docs (thanks, @sebastian-nagel!) (#1091)
• Fixes Readthedocs configuration (#1092)

2.4.0...2.5.0