neon arm support

[jianshu93]

Hello Team,

For arm CPUs, any possibilities to support it? nightly rust seems to support any CPU structure for SIMD operations.

Thanks,

Jianshu

[cauliyang]

I have added arm support #7 . You can try that if you are interested in that.

[jianshu93]

Thanks！ I will test it soon.

Jianshu