Meta-TODO: Associate in-comment TODOs with Issues

[alxmrs]

cubed/cubed/array_api/manipulation_functions.py

Line 546 in 5f75ba2

# TODO: check arrays all have same shape

A pattern for tracking work I really enjoy is associating TODOs in code with github issues. Even if these are the lowest priority, it's still nice to associate code with some issue tracker.

The above line could look like:

TODO(#XXX): check arrays all have same shape 

for example.

[TomNicholas]

I agree - I find a TODO without an issue gets completely forgotten about because it's invisible unless you happen to be looking at that exact spot in the codebase already.

[tomwhite]

I like this suggestion.