vesper_log: Replaced custom FIFO implementation by std::queue.
Moved type LoggingMessage to Vout source file.
Moved message creation code from Vout to Logging class.
Made Vout completely static and automagically (de)initializing.
Improved visual appearance of logging messages.
Added automatic thread idle state while waiting for messages.
Removed duplicate LoggingTypes::endl type, to be replaced by eom.
Removed unnecessary methods from Logging.
Added a few documenting comments.
Added automatic prefixing to Vout.
Made logging prefixes a bit shorter.