General compatibility library to enable cross-product, cross-version plugins to adopt cluster-safe caching. Your plugin should only need this if it needs to support product versions that predate their adoption of the atlassian-cache 2.x API. Known minimum versions for that support include: * JIRA 6.2 * Confluence 5.5 Note: Confluence 5.4 supports clustered caches using the atlassian-cache 0.1 API. This library *does not* support this. Any plugin that requires correct cluster-safe caching in Confluence 5.4 will need to find an alternate solution to that problem.