Use static keys in stable Rust

[Evian-Zhang]

Currently, asm_goto and asm_const features are needed. (See FAQ).

• Tracking Issue for asm_goto_with_outputs rust-lang/rust#119364
• Tracking Issue for asm_const rust-lang/rust#93332

[virusdefender]

asm_goto was stabilized in 1.87

[Evian-Zhang]

Thank you! I have updated this crate to v0.8.0, which can run in stable Rust :)

[virusdefender]

https://github.com/Evian-Zhang/static-keys/blob/master/README.md?plain=1#L7

the information in this link still needs some modifications. Also, there's a suggestion to add the configuration rust-version = "1.87" in the Cargo.toml file, and further clarify that users with versions lower than 1.87 can use the older version.

[Evian-Zhang]

Thank you! I have solved this and published a new version.