view several sessions at the same time

[alixdamman]

larray-project/larray#115

[alixdamman]

Hint: use a treeview

[alixdamman]

TreeView:

• select and display an array
• delete an array
• delete a session

Mapping between the IPython shell and the TreeView:

• create new array
• update array
• delete array
• create new session
• update session
• delete session
• add array to session
• delete array from session

MappingEditor:

• setup editor with mix of arrays and sessions
• File > New
• File > Open Data
• File > Save Data
• File > Save Data As
• File > Load Example