Commitizen

Fix

- **changelog**: empty lines at the beginning of the CHANGELOG

Fix

- **templates**: remove trailing space in keep_a_changelog

Feat

- **changelog**: add support for `changelog_hook` when changelog finishes the generation
- **changelog**: add support for `message_hook` method
- **changelog**: add support for modifying the change_type in the title of the changelog

Fix

- **changelog**: rename `message_hook` -> `changelog_message_builder_hook`

Feat

- **commands/bump**: add "--check-consistency" optional

Feat

- **bump**: add optional --no-verify argument for bump command

Fix

- **docs**: change old url woile.github.io to commitizen-tools.github.io
- **changelog**: generate today's date when using an unreleased_version