Session config file
Packages list in session config file
Locking session config
info moved to Session
info moved to Session
subparsers refactoring
Subparsers refactoring
Help formatting
Home packages dir
Adding/removing packages in the correct order

Dependency order is maintained during add and remove.
Session_dir -> session_root; printing
printing
Printing
Copy
Automatic resolution of missing requirements
Package family
Register base class
Suite attribute
PACKAGE InstanceGetter
Package registers to its suite and requires it