getrandom breaking changes

Use `js_namespace` in the `wasm_js` backend [#559]

`wasm32-wasip1` and `wasm32-wasip2` support [#499]

`getrandom_backend` configuration flag for selection of opt-in backends [#504]

`Error::new_custom` method [#507]

`rndr` opt-in backend [#512]

Automatic MemorySanitizer support [#521] [#571]

`u32` and `u64` functions for generating random values of the respective type [#544]

`wasm32v1-none` support in the `wasm_js` backend [#560]

`wasm_js` crate feature which allows users to enable the `wasm_js` opt-in backend [#574]

`wasm32-wasi` target support (use `wasm32-wasip1` or `wasm32-wasip2` instead) [#499]

`linux_disable_fallback`, `rdrand`, `js`, `test-in-browser`, and `custom` crate features

`register_custom_getrandom!` macro [#504]

Implementation of `From<NonZeroU32>` for `Error` and `Error::code` method [#507]

Internet Explorer 11 support [#554]

Target-specific associated `Error` constants [#562]

Use `ProcessPrng` on Windows 10 and up, and use `RtlGenRandom` on older Windows versions [#415]

Do not use locale-specific `strerror_r` for retrieving error code descriptions [#440]

Avoid assuming `usize` is the native word size in the `rdrand` backend [#442]

Do not read from `errno` when `libc` did not indicate error on Solaris [#448]

Switch from `libpthread`'s mutex to `futex` on Linux and to `nanosleep`-based wait loop

Remove separate codepath for Node.js in the `wasm_js` backend

Rename `getrandom` and `getrandom_uninit` functions to `fill` and `fill_uninit` respectively [#532]

Update MSRV to 1.36 [#291]

Only impl `std` traits when the `"std"` Cargo feature is specified [#106]

Update minimum supported Linux kernel to 2.6.32 [#153]

Update MSRV to 1.34 [#159]

Unsupported targets no longer compile [#107]

Change/Add `Error` constants [#120]

Remove optional `"log"` dependency [#131]

Remove official support for Hermit, L4Re, and UEFI [#133]