transactor is public in subscription
better constructor of ServerOperation
Add logs + if operation is not found say it
Add access to database for serverOpCall, logger
Cosmetic change
Before accepting diffRequest, check if any operation was performed during fetching it from server, if so delay it.
delete testing future
Refactor
Merge pull request #61 from cleandart/transactor

Transactor
Merge branch 'master' of github.com:cleandart/clean_sync into refactor
Just for Thomas