chore: release v0.4.0

Signed-off-by: Nathaniel McCallum <[email protected]>

Release v0.3.0

Signed-off-by: Nathaniel McCallum <[email protected]>

fix: update xsave dependency

also bump minimum rust version to 1.56

Signed-off-by: Harald Hoyer <[email protected]>

Update authors

Signed-off-by: Nathaniel McCallum <[email protected]>