v2.4.3 bump - adding Donate button to readme

README.md

@@ -7,10 +7,11 @@ In `resize mode`, the PDF paper will be changed and fit-to-page will be applied.
 In `mixed mode`, the PDF will first be `resized` then `scaled` with two Ghostscript calls.  
 A temporary file is used in `mixed mode`, at the target location.  
   
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-If you want to support this project, you can give me a cup of coffee :coffee:  
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+#### If you want to support this project, you can give me a cup of coffee :coffee:  
 [![paypal](https://www.paypalobjects.com/en_US/i/btn/btn_donateCC_LG.gif)](https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=RRJATYHXV8JQY)  
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 ## Example Runs
 Better than explaining is showing it: