# 4.1.0

- feature: TypeScript typings [#9](https://github.com/TehShrike/key-master/pull/9)
- breaking of an undocumented/unused feature: before you could construct a key-master instance without a factory function.  Now you can't.

# 4.0.0

- breaking: drop node 4 and use modern JS syntax [#7](https://github.com/TehShrike/key-master/pull/7)

# 3.1.0

- feature: add `getUnderlyingDataStructure` method [#6](https://github.com/TehShrike/key-master/pull/6)