Timespan

I have now had a few enquiries about this project along the lines of "when"? My aim is to have a competent beta version in action by the end of May this year. The time may actually be less than this (like the end of April), but I am trying to look at a worst-case scenario based on my own poor health and other commitments. By my quick mental calculation (should not be used in a production environment!), that is 79 days. Jules Verne thought that one could get around the world in that time, so anything less can't be bad for a software release ;-)