xafloc

I've been a 100% "right" smiley person myself. However, I've struggled with how I place a smile within parens, without the smiley inadvertently closing out the open paren. Perhaps I need to add the left smiley into my repertoire for a slight increase of clarity. (E.g., Like so (: )

Other than that, I feel the ":" is a better separator between your text, and the initiation of the smiley, given it isn't a "hard line".

I'm guessing not very: "The latest release is 0.10 ("Bellingham"), released 2018-05-02"