Based on https://github.com/zfcampus/zf-content-negotiation/releases/tag/1.4.0 (commit 874a590de97b6d105205fdedad1799219c602d87 in this repo)

Added
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- [zfcampus/zf-content-negotiation#103](https://github.com/zfcampus/zf-content-negotiation/pull/103) adds support for PHP 7.2.

Changed
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- Nothing.

Deprecated
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- Nothing.

Removed
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- [zfcampus/zf-content-negotiation#103](https://github.com/zfcampus/zf-content-negotiation/pull/103) removes support for HHVM.

Fixed
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- [zfcampus/zf-content-negotiation#101](https://github.com/zfcampus/zf-content-negotiation/pull/101) fixes how `ContentNegotiationsOptions` handles dash-separated keys,
  ensuring they are always translated to underscore_separated; this fixes issues whereby such
  keys were ignored during execution.