v1.Various fixes and small additions: file exists check that it is not a directory, empty save/export filename if load file does not exist, missing owndialogs, context menu add row & create file if list empty but columns exist, always add row at the end of list, confirm before exit app, change button names if only one row selected
v1.0 First official release. Add records to existing data (right-click in the list zone). Create a new file from scratch (right-click in an empty list zone). Load the file mentioned as first parameter in the command line. Add validation, confirm before exit and fix various small bugs.