Pyxel displays elements as if they are zoomed in.
**Describe the bug**
When running a game the window seems to blow up the elements of the screen. 

**To Reproduce**
Steps to reproduce the behavior:
1. Run the program.

**Expected behavior**
The window should show a full pong menu, with two paddles on the side and a dotted line down the middle.

**Screenshots**
*My Window*
![image](https://user-images.githubusercontent.com/38260408/65653084-ef7b9480-dfe1-11e9-8384-c54f6c7495d6.png)
*Correct Window, Different Computer*
![pyxel_correct_screen](https://user-images.githubusercontent.com/38260408/65653068-e7bbf000-dfe1-11e9-9a09-2646903df06d.png)



**Desktop (please complete the following information):**
 - OS: Windows 10 1809
 - Version 1809


**Additional context**
The program was run using Atom with the Script package as well as IDLE and produced the same results. The same code does not produce the same error with the other person I am working with. Pyxel has been uninstalled and reinstalled using `pip install -U pyxel`. Python is on version 3.7.4.
