chore(release): 1.20.0 [skip ci]
chore(release): 1.20.0 [skip ci]

# [1.20.0](https://github.com/datorama/akita/compare/v1.19.1...v1.20.0) (2018-11-17)

### Features

* **entity-store:** add upsert method ([659b4d1](https://github.com/datorama/akita/commit/659b4d1))

salesforce/akita,salesforce/akita,salesforce/akita,salesforce/akita