* Deprecated getQWData, updated getWQPData to take either parameter code or characteristic name.
* Deprecated getQWData, updated getWQPData to take either parameter code or characteristic name.
* Changed the name of raw data retrievals to: retrieveNWISqwData, retrieveNWISunitData, retrieveNWISdvData, and retrieveWQPqwData (from: retrieveNWISqwData, retrieveUnitNWISData, retrieveNWISData, getRawQWData)
* Changed the name of raw data retrievals to: retrieveNWISqwData, retrieveNWISunitData, retrieveNWISdvData, and retrieveWQPqwData (from: retrieveNWISqwData, retrieveUnitNWISData, retrieveNWISData, getRawQWData)
* Added NA warning to getDVData function
* Added NA warning to getDVData function
* Updated mergeReport to allow for Sample data with different measurements taken on the same day