add 2020 roadmap i just discovered authored by anarcat's avatar anarcat
......@@ -45,3 +45,4 @@ The best way to get involved is to visit IRC (see above). Tell us your backgroun
* [2022](roadmap/2022)
* [2021](roadmap/2021)
* [2020](https://gitlab.torproject.org/tpo/web/www-roadmap/-/blob/master/2020.md)
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