- added RuleInfo which is stored at a known key in the output Map.  Has complete rule execution (even on simple non-rule cube lookups).
- getCell() is now equivalent to getCells().  If more than one cell is located, getCell() (and getCells()) return the last executed cell.  If you need rule information, use the RuleInfo class to access it.  Most rule executions write important info to the output rule Map which the calling code accesses to get the rule results.