Adds new PDF merging class.
Features
- Added new PDF merging class.
Fixes
- Some text is not extracted correctly from PDF files.
- Page transforms fail when processing pages with form Xobjects linked in /Resources stored at /Pages level.
- Replace image transform fails when removing an image that is used multiple times on the same page.
- Page transform fails when page includes form Xobjects with a /Contents entry.
- Annotations with reversed coordinates in /Rect entry are not rendered.
- WPF - RGB/Cmyk JPEGs are not rendered correctly.
- Color LZW images are embedded incorrectly in PDF files.