need better documentation and implementation of 'report_date' in template #46
Description
Currently the tool uses report_date both as a label for the date of the fundamental financial data (which changes by the second when markets are open and is archived by the day in terms of high/low/open/close), and also as an indicator of the last year of valid climate data. Instead we should derive the last year of valid data by simply what's available and recognizing the last year.