1.0.0

Breaking

• Renamed color scheme to theme mode.
• Marked Color as #[non_exhaustive] to allow extension.
• Future-proofed Error::UnsupportedTerminal by introducing an empty struct.
• Changed the return type of perceived_lightness to be a float.
• Removed the Default impl from ColorScheme (now theme mode).
• Raised the minimum supported rust version (MSRV) to 1.74.0.

Features

• All structs implement Hash now.