Merge pull request #20 from boiving/master

Adapters
Added missing value for filters
Merge pull request #21 from boiving/master

Bug Fix
Merge remote-tracking branch 'upstream/master'
Merge pull request #22 from bnadim/master

bug fix
Merge pull request #23 from boiving/master

Bug Fix + TwitterAdapter
Merge pull request #24 from boiving/master

0.6 dev
Merge remote-tracking branch 'boiving/master'
HUB-161 : persistent must be false by default
Merge remote-tracking branch 'nadim/master'
Bug fix on channels. Subscribers field can be omitted in topology
Merge remote-tracking branch 'nadim/master'