Financeager-flask

Removed
- Support for Python 3.7 is removed.
Changed
- The upstream `financeager` dependency is required as lower than v1.4.0. (34)

Removed
- Support for Python 3.6 is removed.
Changed
- The upstream `financeager` dependency is required as lower than v1.3.0. (34)
- The `setup.py` and `setup.cfg` files are replaced by `pyproject.toml` entirely.

Added
- Rename `fflask` module to `flask`, adjust WSGI/FCGI scripts accordingly.
Changed
- The upstream `financeager` dependency is required as lower than v1.1.0.
Deprecated
- Python 3.6 support will be removed in v1.0.0.

Added
- Support `--recurrent-only` option for `fina list` command.
Changed
- The upstream `financeager` dependency is required as v1.0.0 or higher.

Fixed
- Correctly generate release notes when running Github release action.

Changed
- The upstream `financeager` dependency is required as lower than v0.26.3.0.
- Extend CLI help for `web-version` command.