chore(release): 1.7.0 [skip ci]

# [1.7.0](https://github.com/saltstack-formulas/salt-formula/compare/v1.6.0...v1.7.0) (2020-10-12)

### Continuous Integration

* **pre-commit:** add to formula [skip ci] ([7ff962e2](https://github.com/saltstack-formulas/salt-formula/commit/7ff962e2addd97e84dd99c87351b1412f64134af))
* **pre-commit:** enable/disable `rstcheck` as relevant [skip ci] ([426b29c2](https://github.com/saltstack-formulas/salt-formula/commit/426b29c21149f5cef9064177177891a091c6bb82))
* **pre-commit:** finalise `rstcheck` configuration [skip ci] ([22fa616f](https://github.com/saltstack-formulas/salt-formula/commit/22fa616f59864a77e3f7ea5b17e8a7f0bcf415be))

### Features

* add Gentoo support ([127c5d77](https://github.com/saltstack-formulas/salt-formula/commit/127c5d779b1e2b9beb7322a2d03a027c50e5c6d7))