Code blocks in markdown

[phcerdan]

notedown is not able to keep code blocks in markdown when converting to notebooks.
Raised in a plugin using notedown.

For example:

	Hello, this is markdown with a code block:
	```bash
	export HELLO=HOLA
	```

When converted to a notebook:

	Hello, this is markdown with a code block:

	```{.python .input}
	%%bash
	export HELLO=HOLA
	```

[eric-haibin-lin]

is this resolved?