Missing key attribute warning since 0.5.7 upgrade

[martinbroos]

Not that big of deal at this moment, but would be nice if this can be fixed.

warning.js:33 Warning: Each child in an array or iterator should have a unique "key" prop. See https://fb.me/react-warning-keys for more information.
    in div (created by Popover)
    in div (created by Popover)

[gnoesiboe]

Any progress on this?