updated the affiliations of collaborators

paper/paper.md

@@ -17,21 +17,15 @@ authors:
     equal-contrib: true 
     affiliation: 1
   - name: Jennifer Pouplin
-    affiliation: "1, 2"
+    affiliation: "1"
   - name: Jake Elliott
-    affiliation: "1, 3"
+    affiliation: "1"
   - name: Dana Singh
-    affiliation: "1, 4"
+    affiliation: "1"
 affiliations:
  - name: Department of Earth, Atmospheric, and Planetary Sciences, Purdue University, USA
    index: 1
- - name: Metrea Orbital Effects, USA
-   index: 2
- - name: Verisk, USA
-   index: 3
- - name: SAIC, USA
-   index: 4
-date: 03 March 2023
+date: 05 April 2023
 bibliography: paper.bib
 ---
 
@@ -59,4 +53,4 @@ Modeling the behavior of thousands of fully interacting bodies over long timesca
 
 `Swiftest` was developed at Purdue University and was funded under the NASA Emerging Worlds and Solar System Workings programs. Active development by the Purdue Swiftest Team is ongoing and contributions from the community are highly encouraged.
 
-# References
+# References