Prompt for category key/value pairs

[mimischi]

I just started using datreant again and came up with one use-case that might also help others. Given a variety of simulation systems that are already setup without datreant, I want to provide a list of paths to datreant (or call datreant seperately for each path) and be provided an input prompt for key/values I would like to set in the Treant.

For example, I have a variety of systems with different membrane compositions. Now I want to use datreant to its fullest abilities and start quickly categorizing these old simulations.

Running something like datreant create-category ./some/path/ CATEGORY1 CATEGORY2 CATEGORY3, should create a new Treant in ./some/path/ and ask me what I want to set the value for the keys CATEGORY1, CATEGORY2 and CATEGORY3.

On a related manner, I wrote a small script that looks at all files in the path and asks which filename I want to use as the value for some key.

[mimischi]

Also it would be great if one could limit the affected Treants with a filter (by tag it category). So not all Treants are updated.