Tooling API specs handle annotations per test method rather than just per test class.
Javadocs.
These interfaces can be empty.
Marked the placeholder interfaces as @Deprecated.
Mention upgrade to Ant 1.9.2 in release notes.
Replaced @MinToolingApiVersion with @ToolingApiVersion

- Can use >=nnn and <=nnn expressions to specify range of versions.
- Removed some unused stuff from AbstractMultiTestRunner hierarchy.
Merged @MinTargetGradleVersion and @MaxTargetGradleVersion into @TargetGradleVersion.