Adds support for pdf-view (from `pdf-tools') and DocView buffers in `save-place-mode'. If using pdf-view-mode or doc-view-mode, this package will automatically persist between Emacs sessions the current PDF page, size and other information from `pdf-view-bookmark-make-record' or `doc-view-bookmark-make-record', depending on the mode used. These information are persisted using `save-place-mode'. Visiting the same PDF file will restore the previously displayed page and scale amount (if available).