rgb 0.8.53

`struct RGB/RGBA/etc.` for sharing pixels between crates + convenience methods for color manipulation. Allows no-copy high-level interoperability. Also adds common convenience methods and implements standard Rust traits to make `RGB`/`RGBA` pixels and slices first-class Rust objects.
Documentation 
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#[repr(C)]
#[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
#[cfg_attr(feature = "defmt-03", derive(defmt::Format))]
#[derive(Copy, Clone, Debug, Default, Eq, PartialEq, Ord, PartialOrd, Hash)]
/// A `Value (brightness) + Alpha` pixel (rgb crate v0.9)
///
/// This pixel is commonly used for grayscale images.
pub struct GrayA<T, A = T> {
    /// Value - the brightness component. May be luma or luminance.
    pub v: T,
    /// Alpha Component
    pub a: A,
}

impl<T: Copy> GrayA<T> {
    /// Reads the `.v` field
    ///
    /// This function isn't necessary, but it is forwards-compatible with the next major version of the RGB crate.
    pub fn value(self) -> T {
        self.v
    }

    /// Exposes the `.v` field for writing
    ///
    /// This function isn't necessary, but it is forwards-compatible with the next major version of the RGB crate.
    pub fn value_mut(&mut self) -> &mut T {
        &mut self.v
    }
}