Keypresses not detected while mouse is moving
When you try to detect keypresses, they won't get detected when the mouse is moving at the same time.

Steps to reproduce:
- `git clone https://github.com/johnnovak/illwill`
- `cd illwill/examples`
- `nim c -r mouse.nim`
- move the mouse across the screen and try to press Q in order to exit the application.

System Details:
- OS: Pop!_OS 20.04
- Terminal Emulator: GNOME Terminal