message: Fixed `Font::get_height()`, added note on `Font::get_width()`.
diff: @@ -277,7 +277,7 @@ impl Font {
  match *self {
  Font::BitmapFontVariant(BitmapFont { height, .. }) => height,
  Font::TTFFont { scale, .. } => scale.y.ceil() as usize,
  - Font::GlyphFont { .. } => 0,
  + Font::GlyphFont { scale, .. } => scale.y.ceil() as usize,
  }
  }
  @@ -297,6 +297,7 @@ impl Font {
  font.layout(text, scale, offset).collect();
  text_width(&glyphs) as usize
  }
  + // TODO: figure out if this is needed, and how to do it without a context.
  Font::GlyphFont { .. } => 0
  }
  }
  