Update nitrokey crate to 0.4.0

This change finally updates the version of the nitrokey crate that we
consume to 0.4.0. Along with that we update rand_core, one of its
dependencies, to 0.5.1. Further more we add cfg-if in version 0.1.10 and
getrandom in version 0.1.13, both of which are now new (non-development)
dependencies.

Import subrepo nitrokey/:nitrokey at e81057037e9b4f370b64c0a030a725bc6bdfb870
Import subrepo cfg-if/:cfg-if at 4484a6faf816ff8058088ad857b0c6bb2f4b02b2
Import subrepo getrandom/:getrandom at d661aa7e1b8cc80b47dabe3d2135b3b47d2858af
Import subrepo rand/:rand at d877ed528248b52d947e0484364a4e1ae59ca502

1 files changed, 42 insertions, 0 deletions

diff --git a/rand/rand_distr/README.md b/rand/rand_distr/README.md
new file mode 100644
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+# rand_distr
+
+[![Build Status](https://travis-ci.org/rust-random/rand.svg?branch=master)](https://travis-ci.org/rust-random/rand)
+[![Build Status](https://ci.appveyor.com/api/projects/status/github/rust-random/rand?svg=true)](https://ci.appveyor.com/project/rust-random/rand)
+[![Latest version](https://img.shields.io/crates/v/rand_distr.svg)](https://crates.io/crates/rand_distr)
+[[![Book](https://img.shields.io/badge/book-master-yellow.svg)](https://rust-random.github.io/book/)
+[![API](https://img.shields.io/badge/api-master-yellow.svg)](https://rust-random.github.io/rand/rand_distr)
+[![API](https://docs.rs/rand_distr/badge.svg)](https://docs.rs/rand_distr)
+[![Minimum rustc version](https://img.shields.io/badge/rustc-1.32+-lightgray.svg)](https://github.com/rust-random/rand#rust-version-requirements)
+
+Implements a full suite of random number distributions sampling routines.
+
+This crate is a super-set of the [rand::distributions] module, including support
+for sampling from Beta, Binomial, Cauchy, ChiSquared, Dirichlet, exponential,
+Fisher F, Gamma, Log-normal, Normal, Pareto, Poisson, StudentT, Triangular and
+Weibull distributions, as well as sampling points from the unit circle and unit
+sphere surface.
+
+It is worth mentioning the [statrs] crate which provides similar functionality
+along with various support functions, including PDF and CDF computation. In
+contrast, this `rand_distr` crate focusses on sampling from distributions.
+
+Unlike most Rand crates, `rand_distr` does not currently support `no_std`.
+
+Links:
+
+-   [API documentation (master)](https://rust-random.github.io/rand/rand_distr)
+-   [API documentation (docs.rs)](https://docs.rs/rand_distr)
+-   [Changelog](CHANGELOG.md)
+-   [The Rand project](https://github.com/rust-random/rand)
+
+
+[statrs]: https://github.com/boxtown/statrs
+[rand::distributions]: https://rust-random.github.io/rand/rand/distributions/index.html
+
+## License
+
+`rand_distr` is distributed under the terms of both the MIT license and the
+Apache License (Version 2.0).
+
+See [LICENSE-APACHE](LICENSE-APACHE) and [LICENSE-MIT](LICENSE-MIT), and
+[COPYRIGHT](COPYRIGHT) for details.