Commits on Jan 12, 2021

1. distributions/uniform: fix panic in gen_range(0..=MAX) …

   This commit fixes a panic when generating a single sample in an
   inclusive range that spans the entire integer range, eg for u8:
   ```rust
   rng.gen_range(0..=u8::MAX)
   // panicked at 'attempt to add with overflow', src/distributions/uniform.rs:529:42
   ```
   [Playground example](https://play.rust-lang.org/?version=stable&mode=debug&edition=2018&code=use%20rand%3A%3ARng%3B%0A%0Afn%20main()%20%7B%0A%20%20%20%20rand%3A%3Athread_rng().gen_range(0u8..%3D255u8)%3B%0A%7D).
   
   The cause is a discrepancy between the "single sample" and the "many
   samples" codepaths:
   ```rust
   // Ok
   UniformSampler::new_inclusive(u8::MIN, u8::MAX).sample(&mut rng);
   // Panic
   UniformSampler::sample_single_inclusive(u8::MIN, u8::MAX, &mut rng);
   ```
   In `sample`, a `range` of 0 is interpreted to mean "sample from the
   whole range".
   In `sample_range_inclusive`, no check is performed, which leads to
   overflow when computing the `ints_to_reject`.
   
   **Testing**
   - Added a test case.
   - Old code panics, new code passes.

   

   mautier committed Jan 12, 2021
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   4e8c7a4 View commit details

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2. Bump to 0.8.2 and update changelog

   

   mautier committed Jan 12, 2021
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   2c9085a View commit details

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