Deprecation warning for `.fade()`

[danny-burrows]

The deprecation warning here seems to suggest that the .fade() method on Color has been superceded by itself?

raylib-rs/raylib/src/core/color.rs

Lines 146 to 151 in e95f0f2

	/// Color fade-in or fade-out, alpha goes from 0.0f to 1.0f
	#[inline]
	#[deprecated = "Has been superseded by .fade()"]
	pub fn fade(&self, alpha: f32) -> Color {
	unsafe { ffi::Fade(self.into(), alpha).into() }
	}

As far as I can see in raylib I believe the existing pattern still makes sense, would it be possible to remove the deprecation warning?

[danny-burrows]

Ah, I now see from #205 that this is addressed elsewhere.