Support for Zen 4 and nvhpc compiler

This release introduces support for:

• The Zen 4 microarchitecture (#58,#62,#68,#69)

and adds compiler flags for the nvhpc compiler (#67).

Bug Fixes

• Remove pmull feature from A64FX by @giordano in #59
• Apple M2: fix microarchitecture optimization flags by @alalazo in #65
• neoverse-v1: fix flags for GCC by @bernhardkaindl in #64

Other updates

• Intel compilers: Xeon Phi support deprecated by @zzzoom in #61

New Contributors

• @zzzoom made their first contribution in #61
• @bernhardkaindl made their first contribution in #64
• @cparrott73 made their first contribution in #67

Full Changelog: v0.2.0...v0.2.1