JCenter sunset is announced; please republish library version(s) to Maven Central

[dejan2609]

Rationale: https://jfrog.com/blog/into-the-sunset-bintray-jcenter-gocenter-and-chartcenter/

Quote (from a link above):

May 1st | Bintray, JCenter, GoCenter, and ChartCenter services will no longer be available

Note: it seems that Signal Android app depends on this (among many other projects).

@Codewaves let me know if I can help you with this.