Content unit block delta is too long

Really helpful module indeed.

So I created a feature and exported all the content units in it and when I tried to activate this feature, it throws an error for block delta being too long. (as I realise that it shouldn't exceed 32 characters).

Had to remove 'emediate_content_unit' from the module so that it doesn't get appended to the content unit machine names in delta.

Attaching the patch file.