We can't send file as attachment with JSON PATCH

[maryayi]

Recently, we are sending messages with JSON patch to include mentions with one request. but now we can't send attachment because JSON patch doesn't support binary requests (multipart)

After talking with @pylover, He suggested implementing a new form of patch request. (multipart patch)

[pylover]

@mohammadsheikhian , Please add and link such kind of issue on restfulpy.