What version of a package added a function; or, binary search in R

I came across this Stack Overflow question about how to find out when a given function was released. It turns out that a binary search lets us find out faster.
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How to: Install Rtools in a custom location

Today, I needed to update the version of Rtools I use at work. But: the original installation was done by IT, in the default path of C:/Rtools; I don’t have write access there, and I didn’t want to wait for IT to do it for me.
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Blogging: Icons with Font Awesome

When googling… something1 blogdown related, I stumbled onto some slides from an R-Ladies workshop, where Alison Persmanes Hill goes through the process of setting up a website with blogdown and Hugo.
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