merge bzr commit owners

So for a while I've been making commits to https://code.launchpad.net/opencog

However, by "bzr whoami" was set to joel@fruition-ubuntu ... I didn't realise that the name had to have the same email as my registered user. I've recently changed my whoami email to joel (at) joelpitt DOT com and it now associates my new commits with my launchpad account.

I was wondering if there was anyway to change the owner of the many previous commits I've made under joel@fruition-ubuntu to my launchpad account, since I believe my project points don't reflect my contribution and since I'm a paid contributor it could be taken as a sign I've been slack!

Thanks!