AIDA-69 Write results to a json-file.
AIDA-82 Move generating filenames to standalone class.
AIDA-70 Date in filename

- Use string format, regular expression, and date parse patterns to create and parse file names with dates.
- Find file with most recent date in file name from a DirectoryStream.
AIDA-70 Select most recent filenames.

- Correct filter patterns;
- Sub directories are not supported.
AIDA-70 Declare IllegalArgumentException as thrown.
AIDA-70 Use most recent previous results as expected, when these results exist.
AIDA-70 Expected results produce title.
AIDA-70 SearchResult table supports having expected and previous result columns for the same concept simultaneously.
AIDA-70 Closing brace in title.