README.md: update
Sysutils.hpp: refactoring
FtpFileSystem.cpp: fix padding
TTerminal::QueryUserException: minor change
issue #97: FTP: AV if connection is lost

https://github.com/michaellukashov/Far-NetBox/issues/97
TWinSCPPlugin::ShowExtendedException: cleanup
TCustomFarPlugin::HandleException: improvements
version info: update