Pedantic warnings show some fixable issues

[Miles-Davies-HORIBA]

If you enable pedantic warnings on the WiX candle settings in Votive you get some warning that I think could be fixed.

1. Files imported from project dependencies don't have the 'KeyPath' attribute set to 'yes' even though you have a file per component and the file is an assembly or dll with version information in it. Could possibly set this to true if there is only one file per component?
2. The GUIDs generated have mixed case. Switching the GUID format to upper case only would fix that simply enough. Wax.Model\Wix\WixSourceFile.cs

var componentElement = new XElement(WixNames.ComponentNode, new XAttribute("Id", id), new XAttribute("Guid", Guid.NewGuid().ToString("D").ToUpper()));