Started proper client side prediction.

- Send client updates with sequence numbers. Apply client inputs on server and send acknowlegments about processed inputs.
- Updated coffee version, so changed index.coffee appropriately.
- Fix is intermediate, more to come.
Process updates from client one by one, move racket with time delta
Removing processed updates from the client, but still no client side corrections
Debugging for server
Debugging on nodester
Don't move if moves already a history
Debugging on nodester
Properly clone a date object
Not every keyboard event should update state (regression)
Not every keyboard event should update state (regression)
hook test
Fix last direction moving
Additional logging
Additional logging
Additional logging
Something strange with game loop and socket events from nodester
Remove game loop debugging
Move seqs debugging
Move seqs debugging
Unnecessary lastSeq for games