Export useful enums (#77)

Fixes #74

src/index.ts

@@ -2,4 +2,5 @@ import record from './record';
 import { Replayer } from './replay';
 import { mirror } from './utils';
 
+export { EventType,  IncrementalSource, MouseInteractions, ReplayerEvents } from './types'
 export { record, Replayer, mirror };