Most notable changes:

Under the "Members" section of your project you can now create service accounts and are able to download the kubeconfig for the service accounts. Adding service accounts to your project allows you to automate processes in your project. #85

Improvements:

Fix transparent toolbar in ShootEditor (#92)
Secrets (for the gitHub integration and prometheus) are now stored as kubernetes secretes instead of (mis-)using the configmap (#117)
Now using SelfSubjectAccessReview for isAdmin check (86979aa)
Patching the rolebinding has to be done with the dashboard's service account (418694f), as of change: gardener/gardener@3252c5c
When navigating from "All Projects" list to shoot detail, the project context is changed (#114)

eu.gcr.io/gardener-project/gardener/dashboard:1.15.0