VisualSubSync full changelog

· Add scene change support for MP4 container by using synchronisation points.
· Fix loading of big files in text pipe.
· Fix text pipe colorization to at least work consistently for the last added subtitle.
· Try to fix form display when screen is not using 100% dpi.
· More error checking to avoid crash when rendering a media file

· Implemented feature request #2998396 : Open most recent project on startup
· Fixed bug #2988478 : Display problem with “Translate” dialog this dialog is now re-sizable and should display correctly.
· Fixed shortcut overwrite problem when loading preset
· Fixed bug #2970734 : Double click on stop time change the next subtitle.
· Fixed unicode option change : auto save project
· Fixed undo delete action : mark project as dirty
· Fixed translate dialog : now use “translate all subtitles” when there is no VO file
· Fixed VO file loading : always clear current VO file before trying to load new VO file which can be empty
· Added jsplugin function VSSCore.GetTextSelectionStart() : Return the position of the first selected character in the text.
· Added jsplugin function VSSCore.GetTextSelectionLength() : Return the number of characters that are selected.
· Added jsplugin function VSSCore.GetAudioCursorPosition() : Return the position of the yellow audio cursor in ms.