Excel-DNA v1.0.0-rc1

Version 1.0 will be the final version to support legacy .NET Framework (< 4.0) and Excel (< 2007) releases.

The update includes a number of bug fixes as well as improvements to the build-time Visual Studio integration:

• Improve build tasks - more reliable clean-up and debugger detection (thanks to @augustoproiete)
• Improve RTD and async QueueAsMacro reliability
• Improve install process of ExcelDna.AddIn NuGet package (now requires NuGet 2.5) (thanks to @augustoproiete)
• Change how ExcelDnaUtil.Application works in Protected View - try harder but don't cache
• Call UnhandledExceptionHandler for macros (ExcelCommands) too
• Add XML schema for .dna file (thanks to @augustoproiete)
• Add option to pack .pdb files (thanks to @lanfeust69)
• Fix exception handling from native async functions (thanks to @ittegrat)