aggregate stacks based on regex

[epickrram]

It would be useful to be able to aggregate stacks based on (e.g.) package name.

Something like:

./heap-alloc-flames $PID -g "org.hibernate.*"

this will reduce the number of flames, making rendering quicker.

[langera]

Filtering based on regex makes sense. It allows you to focus on various allocations coming from a specific package.
Aggregating in this case has the downside of losing important information.

What do you think?