5.1.0: Xcode 11.1 Support

• 61c6eec Use lightweight tags in git describe (#374)
• d578177 Update CI-release.yml
• f467282 Update CI-release.yml
• 2b75960 Fix CI and CD automation (#373)
• f7211d4 Update test.yml
• 3d92586 Create test.yml
• 3dae99e Small fixes to man page (#372)
• 2874d02 Xcode 11.1 Support (#370)
• be43821 CD integration with GitHub Actions (#367)
• 3face05 First stab at using GH Actions (#366)