It'd be good if we could come up with a list, so we know what functions/types etc.
should have docstrings add/updated and become user-facing (for "Type 2" users).
(Note that adding exports is not breaking)

Here's an initial list of what we think should be public API (exported and docstrings):

• AbstractDeviceFormulation,
• ActivePowerVariable,
• add_cons_container!,
• AddVariableSpec,
• add_variables!,
• DeviceRangeConstraintInfo,
• encode_symbol,
• get_component_name,
• make_constraint_name,
• make_variable_name,
• middle_rename,
• model_time_steps,
• OnVariable,
• PSIContainer,
• PSI_NAME_DELIMITER,
• RangeConstraint,
• RangeConstraintSpecInternal,
• validate_available_devices,
• VariableType,
• AbstractReservesFormulation,
• model_has_parameters,
• service_requirement_constraint!

What else should be on the list? (and what shouldn't ?)

Thanks @nickrobinson251 for the suggestion.