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Restructured Applicators and Combinators

The current structure got really combersome to use and some cross dependencies got through. So now Applicators and Combinators are namespaces and the individual methods are contained in their own static classes. Many cross dependencies were removed. Applicators and Combinators should only rely on the static factory methods of the Try and Retry types, not one another.
Merged Combinators and Applicators

Applicators are now gone and all extensions live in the Combinators namespace.
Removed remaining cross deps and updated Readme

Removed all remaining cross dependencies of the combinators and removed combinator usage in the Try factory methods. Let ReSharper clean up and removed unused references.
Updated license
Updated build script and NuGet spec
Readded Finally, updated Readme again
Merge branch 'dev'

Conflicts:
	build.fsx