Add some change dates and change licenses

dosp-survey.ltx

@@ -185,18 +185,26 @@ BSL 1.1 is a source-available license that allows copying, modification, redistr
 This change applied to almost all of the company's software, including popular
 software like Terraform, Vagrant, and Hashicorp Vault.
 
+Change Date: release +4 years
+Change License: MPL 2.0
+
 Akka (2022-09-07)
-https://www.lightbend.com/blog/why-we-are-changing-the-license-for-akka
+\otsurl{https://www.lightbend.com/blog/why-we-are-changing-the-license-for-akka}
 
 Change Date:          TBD ( 3 years after 2.7.0 release )
 Change License:       Apache License, Version 2.0
 
-% Timing of Sentry and Codecov BUSL releases?
-
 Sentry (2019-11-06)
 
+Change Date: release +3 years
+Change License: Apache License, Version 2.0
+
 CodeCov (2023-08-02 following acquisition by Sentry)
-% https://about.codecov.io/blog/codecov-is-now-open-source/
+\footnote{See
+\otsurl{https://about.codecov.io/blog/codecov-is-now-open-source/}.}
+
+Change Date: release +3 years
+Change License: Apache License, Version 2.0
 
 \subsection{Differences From Other Licensing Strategies}\label{differences}