Feature request: Truncate body if it's too long

[ZacSweers]

Github has a limit

Body is too long (maximum is 65536 characters) // See: https://developer.github.com/v3/issues/comments/#create-a-comment

[issue-label-bot]

Issue-Label Bot is automatically applying the label feature_request to this issue, with a confidence of 0.73. Please mark this comment with 👍 or 👎 to give our bot feedback!

Links: app homepage, dashboard and code for this bot.