Changes

Remove from list when updated to contract work page [https://contractwork.vipulnaik.com/worker.php?worker=Sebastian+Sanchez] and [https://github.com/vipulnaik/contractwork/blob/master/contributor-lists/sebastian-sanchez-list.mediawiki].

* [[Timeline of food and nutrition in India]]

** Add introduction of potato in India e.g. https://en.wikipedia.org/wiki/History_of_the_potato#Asia (there are probably more informative references) ✔

* [[Timeline of Airbnb]] (expansion)

* [[Timeline of Slack]] (expansion)

* [[Timeline of mobile telephony]] (expand):

** Voice over IP calling ✔