Merge #1525

1525: Bump fixed from 0.5.5 to 0.5.6 r=tomtau a=dependabot-preview[bot]

Bumps [fixed](https://gitlab.com/tspiteri/fixed) from 0.5.5 to 0.5.6.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://gitlab.com/tspiteri/fixed/blob/master/RELEASES.md">fixed's changelog</a>.</em></p>
<blockquote>
<h1>Version 0.5.6 (2020-05-01)</h1>
<ul>
<li>The following method were added to signed fixed-point types and to
the <code>FixedSigned</code> trait:
<ul>
<li><code>checked_signum</code>, <code>saturating_signum</code>, <code>wrapping_signum</code>,
<code>overflowing_signum</code></li>
</ul>
</li>
<li>The <code>LossyFrom</code> and <code>LossyInto</code> traits were added to the prelude.</li>
<li>Casts deprecated in version 0.3.1 of the <em>az</em> crate were marked as
deprecated.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://gitlab.com/tspiteri/fixed/commit/079a13ca1b7079f816baf93c99704a88bddab161"><code>079a13c</code></a> version 0.5.6</li>
<li><a href="https://gitlab.com/tspiteri/fixed/commit/86b542e7f34488552f52a23665a31c28fe3a409f"><code>86b542e</code></a> add Lossy{From,Into} to prelude</li>
<li><a href="https://gitlab.com/tspiteri/fixed/commit/0adbf4435efdbeb7871f26fc38f07e0f8b45b206"><code>0adbf44</code></a> at least one more release before 1.0.0 to deprecate items</li>
<li><a href="https://gitlab.com/tspiteri/fixed/commit/672973c99f9a4446ce24873716fd5dbd74100604"><code>672973c</code></a> Revert &quot;remove deprecated items&quot;</li>
<li><a href="https://gitlab.com/tspiteri/fixed/commit/df6ee4111054f69bb54b0fda527c368017e573a4"><code>df6ee41</code></a> Revert &quot;update az dependency to version 1&quot;</li>
<li><a href="https://gitlab.com/tspiteri/fixed/commit/74f0e4f5757aec760a371bcdaca7bd87debd9996"><code>74f0e4f</code></a> add checked versions of signum</li>
<li><a href="https://gitlab.com/tspiteri/fixed/commit/b3a16a967a553125f802fe6164fd9f637cf9b005"><code>b3a16a9</code></a> insert dev in url of development version doc</li>
<li><a href="https://gitlab.com/tspiteri/fixed/commit/aab8d47d8d645e00ae1cc00c3c6e78c15a4bbcbb"><code>aab8d47</code></a> update az dependency to version 1</li>
<li><a href="https://gitlab.com/tspiteri/fixed/commit/339bd1f5aa17a7763d3cf71c38acfd51a3894b8e"><code>339bd1f</code></a> specify version 2 when talking about const generics plan</li>
<li><a href="https://gitlab.com/tspiteri/fixed/commit/f67aed0078494efbffc22dc0c09009b8d5f10947"><code>f67aed0</code></a> remove deprecated items</li>
<li>Additional commits viewable in <a href="https://gitlab.com/tspiteri/fixed/compare/v0.5.5...v0.5.6">compare view</a></li>
</ul>
</details>
<br />


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Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

chain-core/Cargo.toml

@@ -25,7 +25,7 @@ sgx_tstd = { rev = "v1.1.2", git = "https://github.com/apache/teaclave-sgx-sdk.g
 static_assertions = { version = "1.1.0", default-features = false}
 bech32 = { version = "0.7.2", optional = true }
 aead = "0.2"
-fixed = "0.5.5"
+fixed = "0.5.6"
 thiserror = { version = "1.0", default-features = false }
 
 [dev-dependencies]