Rename zones to zone
Add 'livedata' dependency
Hijack method calls using Connection.apply
Move getConnectionProto to utils.js
Hijack both Meteor.subscribe and Connection.subscribe

Meteor.subscribe binds to Connection.subscribe before
Connection.subscribe is hijacked. Need to hijack both to overcome this.
Use single hijack.js file
Refactor Connection.prototype.apply hijack
hijackCode abstracted for better stack trace
cleanup code
Merge branch 'hijack-connection'