Don't mark cell as stale on comments/whitespace changes?

[anjiro]

Description

It would be nice to have cells not get marked as "stale" when I only change comments or add/remove whitespace lines.

Suggested solution

Here's an example. The original cell:

foo=37 #Number of Formal Optimization Operations
bar=99

Changes that I don't want to make the cell marked as stale:

# Define important variables

foo = 37    # Number of Formal Optimization Operations
bar = 99    # Number of Basic Adjustment Repetitions

Alternative

No response

Additional context

No response