make more stuff internal
Merge branch 'dev' of https://github.com/EventStore/EventStore into dev
Fixed: small things.
Fixed: Flush(flushToDisk: true) issue.
Merge branch 'dev' of github.com:/EventStore/EventStore into dev
Changed: slight clena-up and optimization in PTable loading.
Fixed: -f parameter conflict.
Changed: write epoch on each successful election, gossip merge using epoch/writer checkpoint/timestamp.