Any other credits to note?

Glad you asked.

Much gratitude to contributors who generously licensed their work:

Steffen Kjær Larsen white
paper texture
License: CC BY
2.0

virtually_supine black
paper texture
License: CC BY
2.0

shuttermonkey clapboard
icon
License: Public
Domain

GUST e-foundry TeX Gyre
Cursor font
License: GFL/LLPL
Łukasz Komsta GNUTypewriter
font
License: OFL
Nima Yousefi & John August Fountain markup License: MIT
Alan Dague-Greene/Quote-Unquote Apps Courier Prime font License: OFL
antti.brax simple
Undo/Redo implementation
License: Public
Domain

Android Asset Studio simple
modified clapper logo
License: CC BY
3.0

As the app evolves, the list of contributors may change. Be sure to check the latest version of the app for the complete list of thanks.