chore(release): 4.2.1 [skip ci]

## [4.2.1](v4.2.0...v4.2.1) (2019-12-19)

### Bug Fixes

* **readdir:** 🐛  Error no such file or directory ([8d21e9a](8d21e9a))
* **readdirSync:** 🐛  Error no such file or directory ([b6c5764](b6c5764)), closes [#240](#240)

chore(release): 4.2.0 [skip ci]

# [4.2.0](v4.1.0...v4.2.0) (2019-03-02)

### Bug Fixes

* 🐛 bind methods ([b23f09c](b23f09c))

### Features

* 🎸 upgrade dependecies ([91635f8](91635f8))

chore(release): 4.1.0 [skip ci]

# [4.1.0](https://github.com/streamich/unionfs.git/compare/v4.0.0...v4.1.0) (2019-03-01)

### Features

* improve typings ([75a5d69](https://github.com/streamich/unionfs.git/commit/75a5d69))

chore(release): 4.0.0 [skip ci]

# [4.0.0](https://github.com/streamich/unionfs.git/compare/v3.0.2...v4.0.0) (2019-01-30)

### Bug Fixes

* **deps:** update dependency fs-monkey to ^0.3.0 ([c19864e](https://github.com/streamich/unionfs.git/commit/c19864e))

### Features

* 🎸 re-enable semantic-release ([5dc0842](https://github.com/streamich/unionfs.git/commit/5dc0842))
* make readdir merge results from all file systems ([347d2b0](https://github.com/streamich/unionfs.git/commit/347d2b0))
* refactor and improve watch() implementation ([6b9a3f2](https://github.com/streamich/unionfs.git/commit/6b9a3f2))

### BREAKING CHANGES

* behaviour of `watchFile()` and `unwatchFile()` changes.
* readdir now behaves differently

* add implementation of readdir and readdirSync

* tidy up code from review

* corectly dedupe readdir for multiple fss

* sort results from readdir

Merge pull request #11 from streamich/fix/10

Fix/10