Actually, having a slightly longer space after a sentence is common typographic practice and is done by default e.g. in LaTeX. As usual, Wikipedia has a length

Actually, having a slightly longer space after a sentence is common typographic practice and is done by default e.g. in LaTeX. As usual, Wikipedia has a lengthy article on the practice, which dates back to Gutenberg. https://en.wikipedia.org/wiki/History_of_sentence_spacing https://en.wikipedia.org/wiki/History_of_sentence_spacing