Use WinForms clipboard

WPFs clipboard threw an exception at build time
Revert "Use WinForms clipboard"

This reverts commit 351d6d242bacfa1c5700a47b30e487c79975c9a7.
Run clipboard stuff in STA thread
Clear clipboard at the beginning of the test
Use in-memory modules
Fix copy-paste bugs
Merge branch 'release/0.4.0' into develop

Conflicts:
	Weingartner.Json.Migration.Fody.Spec/ModuleWeaverSpec.cs
Ensure version numbers in migration methods are consecutive