Changelog

Modified algorithms and options for image conversion, maintain aspect ratio has been removed as image integrity is more important than the page, thus there are now 2 options: Render full image which changes the page size to the image size and renders the entire image without compression, and Fit Image Into Page which maintains the page size as default (A4 or US Letter - depends on region) and then renders the image to fit inside and centers it to maintain the image aspect ratio.
Added a pdf action mode of splitting a pdf, it will take a multi-page pdf and split it into different files.
Added a selector for both pdf-action: Merge or Split, and Image conversion: Render full image or Fit image into page.
Added a config file to save the selected user settings ->default file name for merged will not be saved as to prevent a situation where a user renamed the merged file name to fit a certain context and then saves a different file under the same context which can be confusing.

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