Compatibility with PsySH 0.11+

With recent PsySH, it is stressful to press RETURN additionally for each input. This is due to an Upstream issue, so I'll be sending some PRs for a few fixes.

https://user-images.githubusercontent.com/822086/167496822-3b412ed1-f6aa-4932-b7eb-b6a16d0a8eb2.mov
