Bump num-traits from 0.2.12 to 0.2.14
Bump num-traits from 0.2.12 to 0.2.14

Bumps [num-traits](https://github.com/rust-num/num-traits) from 0.2.12 to 0.2.14.
- [Release notes](https://github.com/rust-num/num-traits/releases)
- [Changelog](https://github.com/rust-num/num-traits/blob/master/RELEASES.md)
- [Commits](https://github.com/rust-num/num-traits/compare/num-traits-0.2.12...num-traits-0.2.14)

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