1) This version brings a major redesign of overall components. SSH package's classes
             are redesigned around a core class named SshCore. SshCore allows a uniform interface
             for both blocking and non-blocking modes of operation. Visible result of this new 
             design is a single set of methods for both modes of operation for each class. Methods
             starting with "Start" prefix are removed in favor of a simple "NonBlocking()" switch.

             2) In accordance with this behaviour, a sort of "feature parity" is successfully 
                kept, thanks to the new design. Namely, in non-blocking mode, any result can be
                gathered using the new GetResult() method, which returns Value.

	     3) All SSH package classes now has pick semantics.
            
	     4) New design allows creation of higher-level ("complex") SFTP methods where needed.
                Unlike the simple SFTP methods, which work on file handles, Complex methods take 
                care of (allocate/free) file handles internally.
            
	     5) Experimental multithreading support is added (using AsyncWork). This is still
                at a primitive stage. 
	
	     6) Network proxy support is added. This new feature uses NetProxy (Http/Socks4/4a/5)
		package It works through a plugin, provided via Ssh::WhenProxy callback. And it
                is completely optional.

             7) Cancellation mechanism is added. Any operation can be cancelled at any time using
                the Cancel() method.

             8) SFtp::DirEntry class now has a ToString() method. (It will also gain an ToXml()
                method.) This method will give an output similar to Unix ls command.

             9) libssh2 configured to use OpenSSL by default (WinCNG will be made a compile-time
                option in the next release).