A function that writes a correctly formatted .csv file from a MSEtool Data object
Arguments
- Data
- An object of class 'Data'. 
- file
- Character string. The name of the location and file you wish to create (e.g. "C:/temp/mydata.csv") 
- simno
- Integer. An optional argument to specify the simulation number if writing simulated data 
- overwrite
- Boolean. Should existing data files be automatically overwritten. 
- keepNAs
- Boolean. Should slots with NAs still be written to the data file. 
