Model editor

The browser editor opens a fitted model for interactive editing of levels, groupings and offsets, then returns the edited model. These names live in superglm.editor.

superglm.editor.edit	Create an editor session for a fitted model.
superglm.editor.EditorSession	Stateful editor for fitted 1D main effects.
superglm.editor.EditableTerm	Editable link-scale representation of one fitted 1D main effect.
superglm.editor.EditRecord	One reversible edit to a term.