Zip files contain intermediate directories.
Allow installation of specific version.
Added Yank subcommand to remove from index and repo.
Refactored transform to take full spec.
Specification has an identifier.
Refactored Transform to use Specification#identifier
Initial yank predicate supporting exact versions.
Index and MavenRepo delete in terms of Specification, Yank selects with predicate.
yank predicate supports platform: syntax.
Yank predicate supports name: syntax.
Removed primers, migrated to delete_all for yank.