AnimeList: Show how many episodes you're behind

[akyoto]

Show how many episodes you're behind instead of the max episode count.

Use +1 to indicate there is 1 more episode to watch.

[atjallen]

I'm thinking of working on this issue. I have a few questions though:

• Should this apply only to currently airing anime or all anime?
• Might it be a good idea to instead display this alongside the max episode count so that you can still see how many episodes are left in the season if it's currently airing?
• Should this feature be controlled by an settings option?

[akyoto]

@atjallen I removed the "good first issue" label from this because this is not so easy in particular when looking at future, upcoming changes. It's probably better to not touch this for now.