* [Fix] `helpers/getSymbolDescription`: use the global Symbol registry when available (#92)
* [Fix] `ES2015+`: `IsConstructor`: when `Reflect.construct` is available, be spec-accurate (#93)
* [Fix] `ES2015+`: `Set`: Always return boolean value (#101)
* [Fix] `ES2015+`: `Set`: ensure exceptions are thrown in IE 9 when requested
* [Fix] Use `Reflect.apply(…)` if available (#99)
* [Fix] `helpers/floor`: module-cache `Math.floor`
* [Fix] `helpers/getSymbolDescription`: Prefer bound `description` getter when present
* [Fix] `2016`: Use `getIteratorMethod` in `IterableToArrayLike` (#94)
* [Fix] `helpers/OwnPropertyKeys`: Use `Reflect.ownKeys(…)` if available (#91)
* [Fix] `2018+`: Fix `CopyDataProperties` depending on `this` (#95)
* [meta] mark spackled files as autogenerated
* [meta] `Type`: fix spec URL
* [meta] `ES2015`: complete ops list
* [Deps] update `is‑callable`, `is‑regex`
* [Deps] switch from `string.prototype.trimleft`/`string.prototype.trimright` to `string.prototype.trimstart`/`string.prototype.trimend`
* [Dev Deps] update `eslint`, `@ljharb/eslint-config`, `in-publish`, `object-is`, `tape`; add `aud`
* [eslint] `helpers/isPropertyDescriptor`: fix indentation
* [Tests] `helpers/getSymbolDescription`: add test cases; some envs have `Symbol.for` but can not infer a name (#92)
* [Tests] try out CodeQL analysis
* [Tests] reformat expected missing ops
* [Tests] Run tests with `undefined` this (#96)