Merge pull request #70 from nikicat/master

use pickle instead of yaml, various improvements and fixes
"container status -d": fixed command comparison
"container start": try to push repo when it absent in registry
"edit": save file only after successfull serialization
fixed object choice prompt
"container enter": fixed busybox support
api break: use list instead of range for expose_ports
removed circle.yaml
removed support for "setup.py test"
fixed tests
Bump version: 14.0.0 → 14.1.0