PDF Split and Merge 2.0.0 RC1

- Fixed GUI interactivity when generating thumbnails.
- New concurrent thumbnails generation model.
- Console: fixed rotation of even and odd pages in concat command.
- Console: fixed bug #2789961 (stripped invalid chars when applying bookmark name as output file name)
- Console: fixed bug #2789961 (Level 2 Bookmark Name not used on first page)
- VComposer: fixed bug #2793905 (Version combo showing "same as input document")
- VComposer, VReorder: enlarged buttons to fit translations (feature request #2793954)
- Console: fixed bug #2794818 (added system properties: pdfsam.log.console.level, pdfsam.log.file.level, pdfsam.log.file.filename)
- Examples and xsd documents included within the distribution
- Row tool tip in pdf selection table in case of errors or warnings
- iText 2.1.6
- Updated langpack