Resolve "Prepare file CHANGELOG.md and version string in file pyproject.toml for releasing version v1.2.0-preview"
Prepare CHANGELOG and pyproject to release version v1.2.0-preview
- Version v1.2.0-preview is an intermediate release.
- Adapt file CHANGELOG and add all recent changes since last release.
- Adapt version string in file pyproject.toml for v1.2.0-preview.
Closes #155 (closed)