cvt-trait 0.1.12

Reimplementation of the Rust private std::sys::cvt(), but as a trait method.
Documentation
# License Notice
This *Source Code Form* is subject to the terms of the [Mozilla Public License, v. 2.0](./LICENSE.md). If a copy of the MPL was not distributed with this file, *You* can obtain one at <https://mozilla.org/MPL/2.0/>.

In this notice, ***"Source Code Form"*** means all files in the [git](https://git-scm.com/) repository except [the copy of the MPL](./LICENSE.md).