Feature request: Add newline, regardless of cursor position

[superDuperCyberTechno]

Have you searched existing Github issues to see if someone has already requested this feature?
Yes

Is your feature request related to a problem? Please describe.
Adding a new line is pretty much par for the course in Heynote, making this more convenient would make my work easier.

Describe the solution you'd like
Adding the shortcut shift-enter would open a new line below the current, regardless of cursor position on current line.

Describe alternatives you've considered
The only real alternative is to hit end and then enter but that's very cumbersome compared to the above.