Implemented closeOrders in terms of closeOrder.
Removed final from order parameter, since its state is changed.
Implemented closeOrders for Collections.
Added void behaviour to mock.
Created ITickMockConfig class.
Added precision constants for asserting double values.
Added test for null order collection.
Fixed semantic typos.
Added HierarchicalContextRunner dependency.
Updated precisions.
Added methods for retrieving mock configs.
Method for throwing history added.
Removed third price query; currently not needed.
First implementation of InstrumentPriceEngine.