Satisfy Clippy

[dwmunster]

Overview

Makes some tweaks to satisfy Clippy.

Details

• Add implementations for Default for structs with a ::new() with no params.
• Allow empty_docs. These seem to be generated by derive(Tsify)/wasm_bindgen. In particular, it generates the following:

        #[automatically_derived]
        ///
        #[repr(transparent)]
        pub struct JsType {
            obj: wasm_bindgen::JsValue,
        }

• Adds tests for decompose::find_rings to support refactoring.
• Use references rather than index + .get() to avoid unwrapping options in find_rings.

[dwmunster]

Begone red 'X'es