SQLite timestamps

[aiqc]

Difficulty: ★☆☆☆☆

Background

When creating and updating entries in a database, it is good practice the have the fields created_at and updated_at in each table.

Problem

Right now we can't see when different entries were created, which would be handy for sorting a list of experiments.

Potential Solution

This is typically achieved by modifying the base class in the ORM, which in our case is class BaseModel(Model). https://stackoverflow.com/a/18533416/5739514

be sure to set a timezone on the datetime