So, after long considerations over how to deal with the fact that I don't like to charge you (while charging is the whole point of this site), I've come to a system I will try out for the foreseeable future.
Every time I make a major release of a tool, I will write a paid post. With "major" I mean new releases as well as big feature releases, so I'm not going to charge for bug fix releases and I'm not going to chop up releases to make more posts.
I'm also going to give a heads up beforehand so you know which release is coming and whether you want to support it. The next, being submitted to CRAN shortly, is lime—a package for explaining the predictions of black-box models. You can read more about it at https://github.com/thomasp85/lime
Thanks for supporting my work!
With best wishes