Fixed various issues reported by resharper. Added move constructors/move assignment operators to various classes. Exceptions cleanups. Removed unused code. Removed copy constructors/copy assignments from various noncopyable classes. (CH-318).
Decoupled overlapped completion functions from ReaderWriter object. Added notifications to ordered buffer to support correct linking between reader and writer. Various other cleanups. (CH-270)
Moved overlapped file position management to reader/writer object. Simplified buffer ordering by using file position as the ordering key (instead of artificial order id). Isolated overlapped memory management to a separate class. Simplified code responsible for retrying reads and writes. (CH-270)