Odfdo

Add script `odfdo-replace` to find a pattern (regex) in an `ODF` file and replace by some string.

Fixed

- Fix reading content from a `BytesIO`.

Changed

- Add script `odfdo-replace`.

Add recipes showing how to save/read document from `io.BytesIO`.

Added

- Add recipes `read_document_from_bytesio.py` and `save_document_as_bytesio.py`.

Changed

- Refactoring of code.