eBookLuke, thank you for myTXTcleaner, it just saved me a lot of trouble! A very useful little tool.
From your description, myTXTcleaner "removes all of the paragraph marks following lowercase letters, commas and semicolons". I think it might be a good idea to add numbers to this list. I just used it on a text with a lot of times and sums, and paragraph marks following numbers were not deleted. Other than in mathematical texts, I don't think there are a lot of instances where a paragraph can end in a number.
Thank you for your work!