atoi 2.0.0

Parse integers directly from `[u8]` slices in safe code
Documentation 
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Changelog
=========

2.0.0
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* Minimal supported compiler is Rust 1.57.0
* Support for `no-std` by making `std` a default feature which can be opted out of.

1.0.0
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* Minimal supported compiler is Rust 1.56.0
* Changed Rust edition to 2021
* Stabilized interface

0.4.0
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* The `atoi` function now supports parsing signed integers. Use the `FromRadix10` trait directly if
  you wish to not allow leading `+` or `-` signs.

0.3.3
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* Introduce `FromRadix10Signed` and `FromRadix10SignedChecked` for parsing signed integers.

0.3.2
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* Add support for hex numbers through `FromRadix16` and `FromRadix16Checked`.
* Fix: Documentation of `FromRadix10Checked` now has code samples using this trait.

0.3.1
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* Fix: Fixed documentation of `atoi`s overflow behaviour.

0.3.0
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* Added `From_radix_10_checked`.
* Breaking change: atoi now returns `None` on overflow

0.2.4
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* Documentation now hints at `FromRadix10` trait.
* Updated to Rust 2018