Stable release with some important functionality for autotuning

• several extra features to improve autotuning
• save/load extra json files to/from entries
• adding desc.json into .cm (collective meta) to describe API in flat format
• adding dependencies to repos (automatically pull all related repos - useful to distribute repos with all packed artifacts to reproduce experiments from papers)
• a few cosmetic fixes

A few minor extensions/bug fixes

• A few minor bug fixes
• A few minor extensions needed for auto-tuning and learning

Stable version, released to collaborators

• Adding many user-friendly functions
• Ading basic CK web browser (shared ck-web repo). See demo: http://cknowledge.org/repo
• Small bug fixes

Stable version, released to collaborators

Stable version, released to collaborators