v0.10.0-rc.1

What's Changed

• Lua::scope is back
• Support yielding from hooks for Lua 5.3+
• Support setting metatable for Lua builtin types (number/string/function/etc)
• Added LuaNativeFn/LuaNativeFnMut/LuaNativeAsyncFn traits for using in Function::wrap
• Added Error::chain method to return iterator over nested errors
• Added Lua::exec_raw helper to execute low-level Lua C API code
• Added Either<L, R> enum to combine two types into a single one
• Added a new Buffer type for Luau
• Added Value::is_error and Value::as_error helpers
• Added Value::Other variant to represent unknown Lua types (eg LuaJIT CDATA)
• Added (optional) anyhow feature to implement IntoLua for anyhow::Error
• Added IntoLua/FromLua for OsString/OsStr and PathBuf/Path by @psentee in #459