Citations

In the interest of academic integrity, here are the sources that helped me write this code:

Main sources:

• Using Django querysets effectively
• Aggregation Django docs
• Exploring the Hstorefield in Django 1.8
• PostgreSQL specific model fields

Less important sources:

one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen