Release v2.8.0

What's Changed

• Field creation automated through macros by @DmytroTym in #551
• Feat/roman/tree builder by @ChickenLover in #525
• add keccak tree builder by @ChickenLover in #555
• Feat/roman/hash docs by @ChickenLover in #556

Full Changelog: v2.7.1...v2.8.0