merged into the aes crate

The aes-soft crate has been merged into the aes crate. The new repository
location is at:

<https://github.com/RustCrypto/block-ciphers/tree/master/aes>

AES-NI is now autodetected at runtime on i686/x86-64 platforms.
If AES-NI is not present, the aes crate will fallback to a constant-time
portable software implementation.

To force the use of a constant-time portable implementation on these platforms,
even if AES-NI is available, use the new force-soft feature of the aes
crate to disable autodetection.

See advisory page for additional details.

crate has been renamed to cipher

This crate has been renamed from block-cipher to cipher.

The new repository location is at:

<https://github.com/RustCrypto/traits/tree/master/cipher>

See advisory page for additional details.

merged into the aes crate

The aesni crate has been merged into the aes crate. The new repository
location is at:

<https://github.com/RustCrypto/block-ciphers/tree/master/aes>

AES-NI is now autodetected at runtime on i686/x86-64 platforms.
If AES-NI is not present, the aes crate will fallback to a constant-time
portable software implementation.

To prevent this fallback (and have absence of AES-NI result in an illegal
instruction crash instead), continue to pass the same RUSTFLAGS which were
previously required for the aesni crate to compile:

RUSTFLAGS=-Ctarget-feature=+aes,+ssse3

See advisory page for additional details.

arr! macro erases lifetimes

Affected versions of this crate allowed unsoundly extending
lifetimes using arr! macro. This may result in a variety of
memory corruption scenarios, most likely use-after-free.

See advisory page for additional details.

arr! macro erases lifetimes

Affected versions of this crate allowed unsoundly extending
lifetimes using arr! macro. This may result in a variety of
memory corruption scenarios, most likely use-after-free.

See advisory page for additional details.

element-hq/element-web#13247