Object/dict filtering

[tony]

We need a way to return a list of objects. Should be:

• Simplicity over performance
• Not meant for speed. ~100 objects.
• Iterable as a list through a for loop
• Iterable as a dictionary (pk, obj) via .items()
• Support direct lookups via a pk (e.g. git remote name)
• Support any (fixed) type of list item
• Type annotated

Nice to have:

• Should be comparable to other queryset objects

  Including inner data, if possible

• One file

• Simple