Prevents server from sending the number of affected documents in getlasterror following queries.
Only clean affected documents field if it is present.
Disable detailed logging.
Merges from feat-general-selectors-for-remove.
Implements better handling of dot notation selectors in update op. This allows updating date fields.
Merges from feat-more-update-ops.
Refactors update ops for better extensibility and adds  support.
Implements count command.
Implements error reporting for update selectors referencing not-container values as parts of path.
Fixes incorrect log message.
Merges from stable.