- added handling of package urls (work in progress)
- added handling of transitive dependencies (work in progress)
- added protocols for repositories
- moved maven repository implementation into maven folder
- enhanced maven xml parsing
- added type and classifier fields for dependency in maven xml parser
- removed debug output in cache-artifact
- check for concrete artifacts in local-artifact? function
- fixed artifact filename for classified artifacts
- added classifier and extension parameters to cache-artifact
- added support for classifiers
- enhanced project info functions
- refactorings
- fixed source directories after renaming the namespaces