Button text is cropped on Windows

[alisonlange45]

This code:

public static void main(String[] args) {
    canvasTest = canvas = new CanvasWindow("Test", CANVAS_WIDTH, CANVAS_HEIGHT);
    Button basicTest = new Button("Button test");
    basicTest.setPosition(CANVAS_WIDTH/2, CANVAS_HEIGHT / 2);
    canvas.add(basicTest);
}

…produces this result:

Button is properly sized for its text on Mac.

[pcantrell]

Fixed in #23