crypton-x509-validation-1.8.0: ChangeLog.md

# ChangeLog for crypton-x509-validation

## 1.8.0

* Depend on package `time-hourglass`, rather than `hourglass`. Date and
  time-related types and classes are now those from the former package.
  [#18](https://github.com/kazu-yamamoto/crypton-certificate/pull/18)
* Depend on package `crypton-asn1-types >= 0.4.1` rather than `asn1-types`.
  ASN.1-related types and classes are now those from the former package.