assert_panic_free 1.0.2

Assert that some code is panic-free. Fast to compile, no syn or macros etc...
Documentation 
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# assert_panic_free

A lightweight higher-order-function that doesn't compile
if a function you pass to it might panic. This probably
wont' work unless you're compiling your code with optimizations
enabled.

# Example

works when built with optimizations / release:

```no_build
assert_panic_free::assert_panic_free(|| 32);
```

doesn't work:

```compile_fail
assert_panic_free(|| panic!(":("));
```

Inspired by [no_panic](https://github.com/dtolnay/no-panic) and [panic_never](https://github.com/japaric/panic-never) but I wanted something that allowed for fine-grained panic reduction (like no_panic) but also something that compiled fast (like panic_never).