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**Added**
- Cell parsing and exporting done in two specialized classes. This is way easier to read. Pylint score at 9.9 !
- Python file format updated to 1.1: default end of cell for python scripts is one blank space. Two blank spaces are allowed as well. Now you can reformat code in Python IDE without breaking notebook cells ([38](https://github.com/mwouts/jupytext/issues/38)).
- Added support for plain markdown files ([40](https://github.com/mwouts/jupytext/issues/40), [#44](https://github.com/mwouts/jupytext/issues/44)).
- Demonstration notebooks more user friendly ([45](https://github.com/mwouts/jupytext/issues/45)).
- Command line tool simpler to use ([46](https://github.com/mwouts/jupytext/issues/46)).
- Start code patterns present in Jupyter cells are escaped.
- Default `nbrmd_format` is empty (mwouts/nbsrc/[5](https://github.com/mwouts/jupytext/issues/5)): no Jupyter notebook is created on disk when the user opens a Python or R file and saves it from Jupyter, unless the users asks for it by setting `nbrmd_format`.
**Fixed**
- Fixed message in the `nbsrc` script ([43](https://github.com/mwouts/jupytext/issues/43))
- Technical metadata don't appear any more in scripts unless required ([42](https://github.com/mwouts/jupytext/issues/42))
- Code cells that are fully commented remain code cells after round trip ([41](https://github.com/mwouts/jupytext/issues/41))