Merge #384

384: build(deps): bump rand from 0.8.3 to 0.8.4 r=ryan-summers a=dependabot[bot]

Bumps [rand](https://github.com/rust-random/rand) from 0.8.3 to 0.8.4.
<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>[0.8.4] - 2021-06-15</h2>
<h3>Additions</h3>
<ul>
<li>Use const-generics to support arrays of all sizes (<a href="https://github-redirect.dependabot.com/rust-random/rand/issues/1104">#1104</a>)</li>
<li>Implement <code>Clone</code> and <code>Copy</code> for <code>Alphanumeric</code> (<a href="https://github-redirect.dependabot.com/rust-random/rand/issues/1126">#1126</a>)</li>
<li>Add <code>Distribution::map</code> to derive a distribution using a closure (<a href="https://github-redirect.dependabot.com/rust-random/rand/issues/1129">#1129</a>)</li>
<li>Add <code>Slice</code> distribution (<a href="https://github-redirect.dependabot.com/rust-random/rand/issues/1107">#1107</a>)</li>
<li>Add <code>DistString</code> trait with impls for <code>Standard</code> and <code>Alphanumeric</code> (<a href="https://github-redirect.dependabot.com/rust-random/rand/issues/1133">#1133</a>)</li>
</ul>
<h3>Other</h3>
<ul>
<li>Reorder asserts in <code>Uniform</code> float distributions for easier debugging of non-finite arguments
(<a href="https://github-redirect.dependabot.com/rust-random/rand/issues/1094">#1094</a>, <a href="https://github-redirect.dependabot.com/rust-random/rand/issues/1108">#1108</a>)</li>
<li>Add range overflow check in <code>Uniform</code> float distributions (<a href="https://github-redirect.dependabot.com/rust-random/rand/issues/1108">#1108</a>)</li>
<li>Deprecate <code>rngs::adapter::ReadRng</code> (<a href="https://github-redirect.dependabot.com/rust-random/rand/issues/1130">#1130</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="8792268dfe"><code>8792268</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/rust-random/rand/issues/1137">#1137</a> from rust-random/work2</li>
<li><a href="1bfc53d57f"><code>1bfc53d</code></a> Update changelogs and bump version numbers</li>
<li><a href="453431146d"><code>4534311</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/rust-random/rand/issues/1133">#1133</a> from rust-random/work2</li>
<li><a href="81f1af8f4f"><code>81f1af8</code></a> Correct usage of reserve</li>
<li><a href="fa17d1c1a2"><code>fa17d1c</code></a> Add comment to append_string for Standard</li>
<li><a href="b4c1d66409"><code>b4c1d66</code></a> Add DistString</li>
<li><a href="1947c899f7"><code>1947c89</code></a> Move Distribution trait and associates to sub-module</li>
<li><a href="98a0339f99"><code>98a0339</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/rust-random/rand/issues/1135">#1135</a> from dhardy/work</li>
<li><a href="a7f8fb72d7"><code>a7f8fb7</code></a> Prepare rand_chacha v0.3.1 release</li>
<li><a href="09d3df3119"><code>09d3df3</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/rust-random/rand/issues/1130">#1130</a> from dhardy/work</li>
<li>Additional commits viewable in <a href="https://github.com/rust-random/rand/compare/0.8.3...0.8.4">compare view</a></li>
</ul>
</details>
<br />


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Cargo.lock

@@ -569,9 +569,9 @@ dependencies = [
 
 [[package]]
 name = "rand"
-version = "0.8.3"
+version = "0.8.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ef9e7e66b4468674bfcb0c81af8b7fa0bb154fa9f28eb840da5c447baeb8d7e"
+checksum = "2e7573632e6454cf6b99d7aac4ccca54be06da05aca2ef7423d22d27d4d4bcd8"
 dependencies = [
  "libc",
  "rand_chacha",