Multiline string for model details

[gtauriello]

@benmwebb I noticed that the package can handle multiline strings in general but somehow when I try a multiline string for model_details I get a single line text with escaped '\n' characters.

In the attached zip file here you will find the following:

• mkmodbase-multiline.py to generate the multiline.cif file
• my expected output in multiline_exp.cif with an mmCIF-style multiline string

[gtauriello]

Actually the example was overly complicated and didn't showcase the issue when reading the file back in.

Here a better example:
multiline-test.zip

[benmwebb]

Yes, python-ihm only supports output of multiline strings within loop_ constructs, and it doesn't use a loop for _struct. This is an oversight and should be easy to fix.

[brindakv]

@benmwebb multi_line strings should be allowed for model_details but struct should not be looped.

[benmwebb]

The fix does not loop struct.

[brindakv]

Ok thank you. Just wanted to make sure.