Clean up demo build warnings. Update What's New document.
Fixes to create_dylib.sh to cleanup bitcode and architecture support. Update to latest SPIRV-Cross version. Update MoltenVK version to 1.0.26. Update Xcode projects to Xcode 10.1. Update What's New document.
Explicitly specify MoltenVKSPIRVToMSLConverter as prelink library. Update build setting verification check.
Update What's New document. Remove obsolete deprecated licensing functions.