Feature request: use filename pattern

[swizzly]

Hi

In some cases it could be helpful, if we could define a file name pattern, rather to choose a specific file, and either process all file where the pattern matches or take a single file according some predefined attribute: e.g. the newest/oldest/bigest/smallest/etc. out of the resulting list automatically.

In case we need to process a file from a directory, where there are multiple files with the same filename + some pattern e.g. myfile_{date}.csv, and we want to have the most current file.