As a developer I would like to have a supported Spring 5.2.N version used in the project.
Spring Framework 5.1 will be EOL in 2020 according to this https://github.com/spring-projects/spring-framework/wiki/Spring-Framework-Versions.
- Spring updated to the 5.2 line (at least Spring framework 5.2.2 and Spring Security 5.2.1)
- Documentation issues raised to reflect this change (e.g. changes to samples)