Update CONTRIBUTORS.md

CONTRIBUTORS.md

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 # Contributors
 
-Anyone who has contributed to the PISA project can file an issue, open a PR, or email to [email protected] to request to be listed here.
-See also [EXTERNAL_ATTRIBUTION.md](EXTERNAL_ATTRIBUTION.md).
-
 PISA was originally developed by members of The IceCube Collaboration, http://icecube.wisc.edu.
 Development by The IceCube Collaboration on PISA continues, PISA is being shared with the public in hopes that others can use and contribute back as well.
 
 Individual contributors, whether or not from The IceCube Collaboration, are listed below, in alphabetical order.
 
+* Thimothy Arlen
+* Summer Blott
+* Sebastian Böser
+* Étienne Bourbeau
+* Melanie Day
+* Thomas Ehrhardt
+* Philipp Eller
+* Aaron Fienberg
+* Leander Fischer
+* Maicon Hieronymus
+* Feifei Huang
+* Justin L. Lanfranchi
+* Elisa Lohfink
+* Wing Yan Ma
+* Shivesh Mandalia
+* Joakim Sandroos
+* Austin Schneider
+* Lukas Schulte
+* Tom Stuttart
+* Ahnaf Tahmid
+* Alexander Trettin
+* Mathhew J. Weiss
+* Jan Weldert
+* Steven Wren
 
-| Contributor                     | Email                                   | Contribution (optional; see git history for more detail)
-| ------------------------------- | --------------------------------------- | --------------------------------------------------------
-| Thimothy Arlen                  | [email protected]                  | PISA foundations, project management 
-| Sebastian Böser                 | [email protected]                    | PISA foundations, project management 
-| Melanie Day                     |                                         |
-| Justin L. Lanfranchi            | [email protected]               | PISA Cake (3.0) lead dev; architecture, core objects, vbwkde reco stage
-| Lukas Schulte                   | [email protected]                    |
-| Steven Wren                     |                                         |
-
+Anyone who has contributed to the PISA project can file an issue, open a PR, or file an issue to request to be listed here.
+See also [EXTERNAL_ATTRIBUTION.md](EXTERNAL_ATTRIBUTION.md).