cvss-0.3.0.0: CHANGELOG.md

## 0.3

* Fix CVSS V2 score bugs
* Add support for V3/V3.1/V4

## 0.2.0.1

* Update `tasty` dependency bounds

## 0.2

* Changed the CVSS v2 parser and printer to omit the "CVSS:2.0/" version prefix according to the spec.

## 0.1

* Introduction