* Add MemMapFileStream
* Added tests
* Fixed bug in memfiles (zero index for string)
* Added flush to changelog
* Attempt to fix Win's nuances
* Fix attempt to fix
* Continue...
* And again...
* Reworked tests (all for win on Win)
* Fixes in flush (Win)
* Replace fn vars to consts
* Added the attempts parameter to the flush
* Replace while to for
* Move to memfiles
* Use Natural instead of uint
* Better error messages for append mode. Handle specific cases.