An S4 class to store the model objects.

Use newRepository to create a new repository object.

Slots

name: character. Name of the repository.
desc: character. Description of the repository.
data: list. Model objects ("bricks"), e.g., technologies, constraints, costs, etc., stored in with their names as keys, or gropped in named lists.
permit: character. Vector with names of classes permitted to store in the repository. There is a default list of permitted classes which can be extended or modified. Used in internal functions, it is not common to modify this slot.
misc: list. Any additional data or information to store in the object.