add current_position columns to alumni sheets

- Added current_position and current_position_url columns to alumni_postdocs, alumni_grads, alumni_undergrads
- Filled in positions for: Hung-Tu Chen (Meta), Gina Notaro (Lockheed Martin), Andrew Heusser (PyMC Labs), Kirsten Ziman (Princeton), Lucy Owen (U Montana)
- Updated build_people.py to display positions with links
- Rebuilt people.html

Author: jeremymanning

data/people.xlsx

@@ -230,24 +230,24 @@ <h3>Our vast network of fledgling influencers is taking the world by storm.</h3>
             <div class="two-column mt-40">
                 <div>
                     <h3>Postdoctoral Researchers</h3>
-                    <p>Hung-Tu Chen (2024-2025)<br>
-                    Gina Notaro (2017-2018)<br>
-                    Andrew Heusser (2016-2018)</p>
+                    <p>Hung-Tu Chen (2024-2025; now at <a href="https://www.meta.com/" target="_blank">Meta</a>)<br>
+                    Gina Notaro (2017-2018; now at <a href="https://www.lockheedmartin.com/en-us/index.html" target="_blank">Lockheed Martin</a>)<br>
+                    Andrew Heusser (2016-2018; now at <a href="https://www.pymc.io/welcome.html" target="_blank">PyMC Labs</a>)</p>
 
                     <h3>Graduate Students</h3>
                     <p>Mark Taylor (2021)<br>
                     Caroline Lee (2019-2021)<br>
                     Max Bluestone (2018-2020)<br>
                     Deepanshi Shokeen (2018-2020)<br>
-                    Kirsten Ziman (2017-2022)<br>
-                    Lucy Owen (2016-2021)<br>
+                    Kirsten Ziman (2017-2022; now at <a href="https://www.princeton.edu" target="_blank">Lecturer at Princeton University</a>)<br>
+                    Lucy Owen (2016-2021; now at <a href="https://www.umt.edu/" target="_blank">Assistant Professor at University of Montana</a>)<br>
                     Tom Hao Chang (2016-2017)<br>
                     Hanli Li (2016)</p>
 
                     <h3>Lab Managers</h3>
-                    <p><a href="http://paxtonfitzpatrick.github.io" target="_blank">Paxton Fitzpatrick</a> (2019-2021; now a <a href="https://context-lab.com" target="_blank">CDL grad student!</a>)<br>
-                    Emily Whitaker (2017-2018; now at <a href="https://www.wisc.edu/" target="_blank">U Wisconsin-Madison</a>)<br>
-                    <a href="http://kirstensgithub.github.io/" target="_blank">Kirsten Ziman</a> (2016-2017; then a <a href="https://context-lab.com" target="_blank">CDL grad student!</a>)</p>
+                    <p><a href="http://paxtonfitzpatrick.github.io" target="_blank">Paxton Fitzpatrick</a> (2019-2021; now at <a href="https://context-lab.com" target="_blank">now a CDL grad student!</a>)<br>
+                    Emily Whitaker (2017-2018; now at <a href="https://www.wisc.edu/" target="_blank">now at U Wisconsin-Madison</a>)<br>
+                    <a href="http://kirstensgithub.github.io/" target="_blank">Kirsten Ziman</a> (2016-2017; now at <a href="https://context-lab.com" target="_blank">then a CDL grad student!</a>)</p>
                 </div>
                 <div>
                     <h3>Undergraduate Researchers</h3>