Add Tiernan Martin's talk

[wlandau]

@tiernanmartin, may I link to your satRdays presentation here?

I recall you gave a lightning talk on implementing drake workflows as packages, but I cannot seem to find it.

[tiernanmartin]

Sure!

FYI — it was actually a Cascadia R Conference 2019 lightning talk. Unfortunately, there aren't any videos of the presentation — there was a technical problem with the recording equipment, I believe —
but you are welcome to share the presentation PDF that I used during the talk:

• drakepkg-slides-cascadiarconf2019.pdf

[wlandau]

Thanks!