Merge #25

25: Bump num-traits from 0.2.8 to 0.2.9 r=tommilligan a=dependabot-preview[bot]

Bumps [num-traits](https://github.com/rust-num/num-traits) from 0.2.8 to 0.2.9.
<details>
<summary>Changelog</summary>

*Sourced from [num-traits's changelog](https://github.com/rust-num/num-traits/blob/master/RELEASES.md).*

> # Release 0.2.9 (2019-11-12)
> 
> - [A new optional `libm` dependency][99] enables the `Float` and `Real` traits
>   in `no_std` builds.
> - [The new `clamp_min` and `clamp_max`][122] limit minimum and maximum values
>   while preserving input `NAN`s.
> - [Fixed a panic in floating point `from_str_radix` on invalid signs][126].
> - Miscellaneous documentation updates.
> 
> **Contributors**: [@&#8203;cuviper](https://github.com/cuviper), [@&#8203;dingelish](https://github.com/dingelish), [@&#8203;HeroicKatora](https://github.com/HeroicKatora), [@&#8203;jturner314](https://github.com/jturner314), [@&#8203;ocstl](https://github.com/ocstl),
> [@&#8203;Shnatsel](https://github.com/Shnatsel), [@&#8203;termoshtt](https://github.com/termoshtt), [@&#8203;waywardmonkeys](https://github.com/waywardmonkeys), [@&#8203;yoanlcq](https://github.com/yoanlcq)
> 
> [99]: [rust-num/num-traits#99](https://github-redirect.dependabot.com/rust-num/num-traits/pull/99)
> [122]: [rust-num/num-traits#122](https://github-redirect.dependabot.com/rust-num/num-traits/pull/122)
> [126]: [rust-num/num-traits#126](https://github-redirect.dependabot.com/rust-num/num-traits/pull/126)
</details>
<details>
<summary>Commits</summary>

- [`8eb83e2`](rust-num/num-traits@8eb83e2) Merge [#142](https://github-redirect.dependabot.com/rust-num/num-traits/issues/142)
- [`b61498a`](rust-num/num-traits@b61498a) Release 0.2.9
- [`6408853`](rust-num/num-traits@6408853) Remove unused #[inline] attributes
- [`4cbc27d`](rust-num/num-traits@4cbc27d) Merge [#137](https://github-redirect.dependabot.com/rust-num/num-traits/issues/137)
- [`da66427`](rust-num/num-traits@da66427) Merge [#140](https://github-redirect.dependabot.com/rust-num/num-traits/issues/140)
- [`da19eaf`](rust-num/num-traits@da19eaf) Compatible with cargo --remap-path-prefix
- [`fdb4181`](rust-num/num-traits@fdb4181) ToPrimitive: document when `to_` methods can return `None`
- [`27e3f85`](rust-num/num-traits@27e3f85) NumCast: document when `from` can return `None`
- [`16cdce3`](rust-num/num-traits@16cdce3) FromPrimitive: fix some comments
- [`2f0cffd`](rust-num/num-traits@2f0cffd) Merge [#99](https://github-redirect.dependabot.com/rust-num/num-traits/issues/99)
- Additional commits viewable in [compare view](rust-num/num-traits@num-traits-0.2.8...num-traits-0.2.9)
</details>
<br />

[![Dependabot compatibility score](https://api.dependabot.com/badges/compatibility_score?dependency-name=num-traits&package-manager=cargo&previous-version=0.2.8&new-version=0.2.9)](https://dependabot.com/compatibility-score.html?dependency-name=num-traits&package-manager=cargo&previous-version=0.2.8&new-version=0.2.9)

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

Cargo.toml

@@ -10,7 +10,7 @@ clap = "^2.33.0"
 env_logger = "^0.7.1"
 log = "^0.4.8"
 num-bigint = "^0.2.3"
-num-traits = "^0.2.8"
+num-traits = "^0.2.9"
 num_cpus = "^1.11.1"
 png = "0.15.0"
 threadpool = "^1.7.1"