Notice: Undefined index: fade in backstretch_field_formatter_view() (line 314 in backstretch.module

Oh sorry, that happened if the value is zero, fixed with c807887.

The other suggestion is related to this issue #1977740: Suggestion: Expose duration and fade config even if field is not multiple value.

I'm changing this to needs review since the same problem was happening with the context integration. I've attached a patch that fixes this, which is just the same fix from the patch mentioned above.

managed to recreate the issue by installing the module & creating a context that activates backstretch and got the error.
The patch in #4 fixed the issue.

Cool, thank you jeni_dc, fixed with c178a85. You should name the patch correctly. See Submitting patches:

This is an important step as it makes managing patches easier for people who work with many patches at once (e.g. core committers). Adopting a standardized naming convention such as [module_name]-[short-description]-[issue-number]-[comment-number].patch is very helpful.

For example, a patch about the forum module's comment titles attached to comment #15 of issue #12345 should be named: forum-comment-titles-12345-15.patch

Hi yannickoo Was wondering about the state of the patch naming. I have been following the instructions on the project version control page https://drupal.org/project/backstretch/git-instructions although I think adding the module name is better.
do you know which of the two is more up to date?

Oh, good to know. I will post an issue I posted an issue (#2012538: "Creating a patch" section on the "Version control" page) in the Drupal.org webmasters issue queue. Please use the module name as prefix in the patch name :)

nice one yannickoo :)