5.2.0

Added

• rlch: Added async methods to Option<T> and Result<T, E>.
• rlch: Added missing type arguments to Option<T> and Result<T, E>.
• rlch: Added code coverage for async methods.
• rlch: Added OptionFutureRedirector util to redirect methods called on Future<Option<T>>.
• rlch: Added ResultFutureRedirector util to redirect methods called on Future<Result<T, E>>.