build(deps): bump rand_core from 0.5.1 to 0.6.0

[dependabot]

Bumps rand_core from 0.5.1 to 0.6.0.

Changelog

Sourced from rand_core's changelog.

[0.6.0] - 2018-11-14

Project organisation

• Rand has moved from rust-lang-nursery to rust-random! (#578)
• Created The Rust Random Book (source)
• Update copyright and licence notices (#591, #611)
• Migrate policy documentation from the wiki (#544)

Platforms

• Add fork protection on Unix (#466)
• Added support for wasm-bindgen. (#541, #559, #562, #600)
• Enable OsRng for powerpc64, sparc and sparc64 (#609)
• Use syscall from libc on Linux instead of redefining it (#629)

RNGs

• Switch SmallRng to use PCG (#623)
• Implement Pcg32 and Pcg64Mcg generators (#632)
• Move ISAAC RNGs to a dedicated crate (#551)
• Move Xorshift RNG to its own crate (#557)
• Move ChaCha and HC128 RNGs to dedicated crates (#607, #636)
• Remove usage of Rc from ThreadRng (#615)

Sampling and distributions

• Implement Rng.gen_ratio() and Bernoulli::new_ratio() (#491)
• Make Uniform strictly respect f32 / f64 high/low bounds (#477)
• Allow gen_range and Uniform to work on non-Copy types (#506)
• Uniform supports inclusive ranges: Uniform::from(a..=b). This is automatically enabled for Rust >= 1.27. (#566)
• Implement TrustedLen and FusedIterator for DistIter (#620)

New distributions

• Add the Dirichlet distribution (#485)
• Added sampling from the unit sphere and circle. (#567)
• Implement the triangular distribution (#575)
• Implement the Weibull distribution (#576)
• Implement the Beta distribution (#574)

Optimisations

• Optimise Bernoulli::new (#500)
• Optimise char sampling (#519)
• Optimise sampling of std::time::Duration (#583)

Sequences

• Redesign the seq module (#483, #515)
• Add WeightedIndex and choose_weighted (#518, #547)
• Optimised and changed return type of the sample_indices function. (#479)
• Use Iterator::size_hint() to speed up IteratorRandom::choose (#593)

... (truncated)

Commits

• 98e220c Merge pull request #1072 from dhardy/work
• 95fea0e Fix link in README; rename keyword as suggested in #1073
• 459d863 Prepare rand_chacha 0.3.0 release
• 15aebf4 Prepare rand_pcg 0.3.0
• 14c2016 Prepare rand_hc 0.3.0
• d95dbd2 Prepare rand_core 0.6.0
• 6682db1 Merge pull request #1073 from rust-random/work2
• 33b8f37 Address review: use assert_almost_eq macro
• 354468e Use approximate assertions in value stability and increase some tolerences sl...
• 33a78de Add cross test (inspired by ndarray CI)
• Additional commits viewable in compare view

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[dependabot]

Superseded by #214.