Release v1.6.5.1-2

v1.6.5.2

• Issue #387: Certificate password can be null

v1.6.5.1

• Issue #377: How to register a new MIME type with custom document icon
• Issue #373: Bootstrapper.DigitalSignature.Apply hide console output
• Added missing IconFile support
• SetupEvent sample extended to show how restart itself elevated if required.