v0.7.0

What’s Changed

• Release v0.6.x (#792) @lispc

Changes in the bus-mapping

• (1) testool: use cache skip success cases (2) testool enable parallel compilation (3) fix many corner cases (#798) @lightsing
• refactor return data (#797) @lispc

Changes in eth-types

• refactor return data (#797) @lispc

Changes in the zkevm-circuits

• (1) testool: use cache skip success cases (2) testool enable parallel compilation (3) fix many corner cases (#798) @lightsing
• Refactor: make witness gen of tx circuit more easier to maintain (#800) @kunxian-xia
• test tool: fix first byte (#802) @DreamWuGit
• [FIX] incorrect assignment of is_zero in gas cost gadget of modexp (#796) @noel2004
• refactor return data (#797) @lispc