Custom changes in VannaFlaskAPI

[azawalich]

Hello @zainhoda , I would like to make changes in VannFlaskAPI functions declared here - e.g. add some keys to returned JSON dictionaries. How can I achieve that? Pre- and post-filtering with super (shown here) doesn't work, as these methods are declared directly in __init__. It would be an ideal solution, as it avoids maintaining source code, only the customizations.

[azawalich]

I have implemented a workaround for this - in case you need it, let me know, and I will describe it here.

[zainhoda]

I'd be open to a PR if you've made a modification that allows easily adding functions