v0.5.0

What's Changed

• feat!: this is now an automatic differentiation library by @c0dearm in #4
• change!: variable and constant tensors are now different types by @c0dearm in #6
• feat: initial version of nn module by @c0dearm in #9

Full Changelog: https://github.com/c0dearm/mushin/commits/0.5.0