Fixes for input re-prompting

[anderoonies]

When prompting with readInt, readFloat, or readBoolean, correctly re-prompt the user with the output from the failing prompt

Summary

Input re-prompts weren't including the latest incorrect input in the prompt. This fixes that, as well as simplifying how readNumber works.
readLine behaves separately, since it doesn't have a parseFn, so I'm just duplicating the behavior of printing the prompt then output there.

Changes:

• expose print and println in windowbinding entrypoint
• properly include failed prompt in output

Screenshots of the change:

Checklist

• npm test passes
• Unit tests are included / updated
• Documentation has been updated where relevant