rm tests/test.cpp
fix docment test
fixed Document::get zero-length piece copy
removed zero-length piece check
added Q_PROPERTY to cursor
added save as
added scrollbar
fixed scrollbar
fixed scrollbar behavior when document length changed
fixed project dependency
added document changed event
fixed scrollbar enabled condition
added support tab closable
added Save YesNoDialog
implementing Document::reopenKeepUndo
fix mainform
Refactoring Config classes.
Fixed hexconfig
Fixed textview/columnbar blank drawn bug
Removed drawableLines member function from Global class and fixed related codes
Refactored code