This commit adds support for the experimental reactive starter. When
that starter is selected, the version of Spring Framework and Reactor are
automatically overridden and the java version is forced to 1.8
This starter includes an additional BOM that provides dependency
management for reactive-related dependencies (typically netty).
This commit upgrades to Spring Boot 1.4.0.RELEASE and bumps to Java8. It
also migrate the cache library from Guava to Caffeeine.
The git and build information are now exposed via the `info` endpoint.
Closes gh-251
This commit makes sure that the generated initializr-service app does
not contain a version number. That way, it is easier to reuse the same
command to push the app, regardless of the current version.
