version-sync-0.9.4

Version 0.9.4 — 2021-12-14

• #114: Move from
  deprecated the semver-parser crate to semver.
• #115: Expand
  assert_markdown_deps_updated! to also check version numbers such
  as =1.2.3, >1.2.3, and >=1.2.3.
• #119: Add new
  assert_only_contains_regex! macro which can ensure that all
  version numbers in a file are updated.