Provide helpful error message if strong name key is missing (fixes #41)
Prepare for development of release 1.1
Merge pull request #44 from sharwell/dev-1.1

Prepare for development of release 1.1
Use separate strong name keys for each target framework (fixes #27)
Merge pull request #43 from sharwell/fix-41

Provide helpful error message if strong name key is missing
Merge pull request #40 from sharwell/fix-27

Use separate strong name keys for each target framework
Validate strong name keys prior to creating NuGet packages (fixes #42)
Use WriteErrorLine instead of Echo
Merge pull request #45 from sharwell/writeerrorline

Use WriteErrorLine instead of Echo
Merge pull request #46 from sharwell/fix-42

Validate strong name keys prior to creating NuGet packages
Add extra build scripts to solution folder
Merge pull request #47 from sharwell/build-scripts-in-solution

Add extra build scripts to solution folder
Improved type safety in TaskCompletionSourceExtensions, allowing the class to be made public
Merge pull request #48 from sharwell/tcs-extensions

Improved type safety in TaskCompletionSourceExtensions
Add DelayedTask.Delay for all targets except portable-net40 (fixes #30)
Add DelayedTask.WhenAll (fixes #31)
Add DelayedTask.WhenAny (fixes #32)