Remove writers from lib

Closes #4

index.ts

@@ -1,7 +1,5 @@
-export { Level, type Options } from 'types'
-export * as Writer from 'writer'
-export {set_options, get_options, set_writer, get_writer, remove_writer, Logger} from 'index'
-
-import {Logger} from 'index'
+import {Level, LevelFilter, type WriterOptions, type Writer} from 'types'
+import {Logger, writers, options} from 'logger'
 
 export default (namespace: string) => new Logger(namespace)
+export {Level, LevelFilter, type WriterOptions, type Writer, writers, options}