Task

Write a simple tool to track a small set of data.

The tool should have a command-line interface to enter at least two different values.

The entered data should be stored in a structured format and saved to disk.

It does not matter what kind of data is being tracked.   It could be a collection (CDs, coins, baseball cards, books), a diary, an electronic organizer (birthdays/anniversaries/phone numbers/addresses), etc.



You should track the following details:

 A description of the item. (e.g., title, name)
 A category or tag (genre, topic, relationship such as “friend” or “family”)
 A date (either the date when the entry was made or some other date that is meaningful, like the birthday); the date may be generated or entered manually
 Other optional fields


The command should support the following Command-line arguments to run:

 Add a new entry
 Print the latest entry
 Print the latest entry for each category
 Print all entries sorted by a date


The category may be realized as a tag or as structure (by making all entries in that category subitems)

The file format on disk should be human readable, but it need not be standardized.   A natively available format that doesn't need an external library is preferred.   Avoid developing your own format if you can use an already existing one.   If there is no existing format available, pick one of:

   JSON
   S-Expressions
   YAML
   others


Related task

   Take notes on the command line 


Name,Birthdate,State,Relation,Email
Sally Whittaker,1988-12-05,Illinois,friend,sally@mail.com
Belinda Jameson,1994-02-17,California,family,beljames@example.com
Jeff Bragg,2018-10-10,Texas,family,jb@texas.edu
Sandy Allen,2002-03-09,Colorado,friend,sandya@mail.com
Fred Kobo,1967-10-10,Colorado,friend,fkobo@example.net