Add a Scale file action

• Add a Scale file action.
• Improve performance of the Split by File Size action.
• Allow multiple PDF files selection for the Crop file action.
• Fix a bug that prevents the user from splitting PDF files by file
sizes smaller than 1 MB.

Author: xilopaint

Alfred PDF Tools.alfredworkflow

@@ -25,6 +25,7 @@ Download the workflow file from [GitHub releases][2] and install it by double-cl
 * `Slice in Multiple Files`: Slice the selected PDF file in multiple files by entering page numbers and/or page ranges separated by commas (e.g. 2, 5-8).
 * `Slice in a Single File`: Slice the selected PDF file in a single file by entering page numbers and/or page ranges separated by commas (e.g. 2, 5-8).
 * `Crop`: Convert two-column pages in single pages.
+* `Scale`: Scale the selected PDF files to a given paper size.
 
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