Bump rand from 0.7.2 to 0.7.3 Bumps [rand](https://github.com/rust-random/rand) from 0.7.2 to 0.7.3. <details> <summary>Changelog</summary> <p><em>Sourced from <a href="https://github.com/rust-random/rand/blob/master/CHANGELOG.md">rand's changelog</a>.</em></p> <blockquote> <h2>[0.7.3] - 2020-01-10</h2> <h3>Fixes</h3> <ul> <li>The <code>Bernoulli</code> distribution constructors now reports an error on NaN and on <code>denominator == 0</code>. (<a href="https://github-redirect.dependabot.com/rust-random/rand/issues/925">#925</a>)</li> <li>Use <code>std::sync::Once</code> to register fork handler, avoiding possible atomicity violation (<a href="https://github-redirect.dependabot.com/rust-random/rand/issues/928">#928</a>)</li> <li>Fix documentation on the precision of generated floating-point values</li> </ul> <h3>Changes</h3> <ul> <li>Unix: make libc dependency optional; only use fork protection with std feature (<a href="https://github-redirect.dependabot.com/rust-random/rand/issues/928">#928</a>)</li> </ul> <h3>Additions</h3> <ul> <li>Implement <code>std::error::Error</code> for <code>BernoulliError</code> (<a href="https://github-redirect.dependabot.com/rust-random/rand/issues/919">#919</a>)</li> </ul> </blockquote> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/rust-random/rand/commit/074cb6a997f91db653f8a53c755ddc07495ab429"><code>074cb6a</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/rust-random/rand/issues/929">#929</a> from dhardy/master</li> <li><a href="https://github.com/rust-random/rand/commit/0f4e152c1c9acf9aeb775bf450fb66f1fec17099"><code>0f4e152</code></a> Prepare rand 0.7.3 release</li> <li><a href="https://github.com/rust-random/rand/commit/5b0d87436999c3d930e17f9f10bdb68cd0aa38df"><code>5b0d874</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/rust-random/rand/issues/928">#928</a> from dhardy/libc</li> <li><a href="https://github.com/rust-random/rand/commit/ae4683cec7b637854ab5193b08dd78478942da81"><code>ae4683c</code></a> Remove use of deprecated ATOMIC_USIZE_INIT</li> <li><a href="https://github.com/rust-random/rand/commit/ae3a416ecc5333a02557f6b9b29e88bee50640a0"><code>ae3a416</code></a> Fix <a href="https://github-redirect.dependabot.com/rust-random/rand/issues/911">#911</a>: use Once instead of AtomicBool</li> <li><a href="https://github.com/rust-random/rand/commit/a67173ef634f5fd3db387c34fd56aabb7a045c50"><code>a67173e</code></a> make libc dependency optional (fork protection requires std)</li> <li><a href="https://github.com/rust-random/rand/commit/e2dc2c384889d0690b84d30702c9311796d74502"><code>e2dc2c3</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/rust-random/rand/issues/926">#926</a> from dhardy/fmt</li> <li><a href="https://github.com/rust-random/rand/commit/fab964d194c37bd0d2fdd49a284743b5a4103e75"><code>fab964d</code></a> Manual function specification reformatting</li> <li><a href="https://github.com/rust-random/rand/commit/3a5d5a8e7a7ef15653865d8c26d984faf70d4e2f"><code>3a5d5a8</code></a> Use rustfmt::skip for some cases</li> <li><a href="https://github.com/rust-random/rand/commit/3a51c3e0e26d276c55ab181e40621e3d8d8c00ee"><code>3a51c3e</code></a> Manual array reformatting</li> <li>Additional commits viewable in <a href="https://github.com/rust-random/rand/compare/0.7.2...0.7.3">compare view</a></li> </ul> </details> <br /> [![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=rand&package-manager=cargo&previous-version=0.7.2&new-version=0.7.3)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores) Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. 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