v0.0.8

• Allow replacing different types of version. For instance, you may want to write pub_version="1.42" in one file and full_version="1.2.42-rc1" in an other.
• Add --dry-run command line argument
• Improve error handling
  • Validate git commit message template
  • Validate that current version matches expected regex
  • Make sure new version matches the expected regex
  • Make sure that custom version templates only contain known groups
• Avoid leaving the repo in an inconsistent state if no match is found