Fix:
- unused_unsafe
- clippy::assign_op_pattern
- clippy::bool_assert_comparison
- clippy::iter_nth_zero
- clippy::len_zero
- clippy::needless_bool
- clippy::redundant_field_names
- clippy::redundant_static_lifetimes
- clippy::single_match
- clippy::unnecessary_mut_passed
- clippy::useless_format

Silence:
- clippy::comparison_chain
- clippy::new_without_default
- clippy::too_many_arguments

Signed-off-by: Tim Crawford <tcrawford@system76.com>