Reflowable Layout

Bug resolved that gotoPageByHash function malfunctions in RTL.
Bug resolved that gotoPageByHash function malfunctions in RTL and Vertical Writing.
Bug resolved that setTTSLanguage does not work.
Font is rendered with Anti-Aliasing now.
New Function is Added.
-(void)setNavigationAreaEnabled:(BOOL)value;
// if value is true(default), clicking both left and right side to navigate page will be enabled.