Merge branch 'collections'
Merge branch 'master' into testing
Cleaning: removed method that is now covered by Collections library

Namely, _DictionaryFromString, now replaced with String.SplitToDictionary.
Also, referenced the Collections library instead of StringExtensions one.
Merge branch 'testing'
Docs: Updated README
Creep: Did nothing

Namely, started "Types" utilities library, with a None class. It's supposed to represent some sort of void in generics where having no parameter instead would be way too cumbersome.
Also, it just so happens that it can make single-input-single-output functions out of Action, Action<T> and Func<T>, as well as the reverse; pretty much because I work a lot with such sort of functions in other project of mine. *shrugs*
Creep: Made references

Namely, added Ref class that wraps value types in a reference type. Thanks to terribly dangerous implicit operators it can wrap/unwrap values behind the scenes.
It's mostly meant to be used in generics, in cases where it's better/required to use reference types.
Merge branch 'types'
Docs: Updated README

Also, changed formatting a bit and corrected information about files contained in Testing archive.
Creep: Added FileWalker class

It facilitates operations on files that that reference each other using the path relative to the referencing file directory (i.e. the most intuitive path there is).
Also, added BytesFileWalker, LinesFileWalker and StringsFileWalker classes corresponding to File.ReadAll/WriteAll methods (to be found in FileWalker_Basic.cs).
Also, added ExtensionFileWalker class that chooses the file processing function based on its extension.
Also, I had to use try/finally block at some point. Spooky!
Merge branch 'files'
Docs: Updated README

Also, included "Types" library in the list of directories; somehow forgot this one earlier.
Merge branch 'master' into collections
Creep: Added GetOrDefault method to DictionariesExtensions static class

As its name implies, it either find a key in a dictionary, or passes a user-specified default if the key hasn't been found.