Did some fixes in `Text::findCharacterPos` and `Text::findCharacterFromPos`, also tentatively added support for soft-wrap in those function (I haven't tested much yet).
Added UINodeLink, this is a very simple node that lets you set a link to another node.
Improved focus control in the status bar panels and windows.
It's possible now in UICodeEditorSplitter to cancel a split request with a custom function checker.
When downloading a file that it's not a supported format, it will try to open with the default external program set in the host OS.
Added a new UIMessageBox event: `Event::OnDiscard`, this will triggered when window is closed without confirmation (`Event::OnConfirm`). And now `Event::OnCancel` is only triggered when is manually cancelled (click the cancel button).
ecode: Greatly improved image viewing experience. Now you can switch images from the same directory with the mouse wheel, also zoom, translate and rotate the images, images open in a new tab by default but quick-preview can be activated in `Settings -> Window -> Quick Preview Images` (SpartanJ/ecode#96).
