Issue with Uploading Media
Hi,
I have a small proc gen bot using this api and it recently started to fail on the uploads. With no code change on my side.
I still have to do full testing but I noticed that twitter specifies you should be using multipart/form-data and should be set to application/octet-stream https://dev.twitter.com/rest/reference/post/media/upload
The OAuth lib you are using doesn't use the normal go multipart writer and sets application/x-www-form-urlencoded. I'm wondering if Twitter got a bit more strict on this.
Is this a known issue? Is anyone else getting this?
So this is one of the files I can reproduce this with

Doesn't happen with non-animated gifs it seems
@Kimau: Have you ever figured out the cause of your issue?