Fix a bug with the new EventEmitter inheritance
Fix a bug with the new EventEmitter inheritance

See https://travis-ci.org/lukasbestle/newdb/jobs/103116844. The build failed for Node 0.10.
This fixes it by using a syntax that is supported in all supported Node versions, including v0.10.
lukasbestle/newdb,louischatriot/nedb,louischatriot/nedb,lukasbestle/newdb,louischatriot/nedb,lukasbestle/newdb