Enable searching by commit message on compare workflow

Hello,

Can you add a feature to filter by commit message on the "compare" workflow between two branches. Essentially, I am using that to generate 'release notes' for a team. I'd like to filter the commits to only show the merge commits that are accepted into master and not all of the individual developer commits that occured. We are not squashing commits to preserve context around a change, so I feel that being able to filter the results would serve the need.

Scrapping the URL params from the commit search screen, the URL would look something like this: /compare/349d510f76066ddb67241d8661fa2adc347c9642...b85754586b82dd5c09917eb8cc81e7cb7429d842?utf8=✓&search=into+%27master%27

Thanks, Tom