[PATCH 3 of 8 V5] bundle2: add `bookmarks` part handler

[Pierre-Yves David]

On 10/05/2016 07:00 PM, Stanislau Hlebik wrote:
> Calling prepushkey and pushkey hook from `bookmarks` part seems a bit hacky and my current local implementation is not very pleasant. I'll try to come up with smth better

I'm afraid we have to :-/ people enforcing some bookmark semantic 
through pushkey hooks would have that broken otherwise. Having to do 
this, that really does not makes me happy.

Cheers,

-- 
Pierre-Yves David