v0.2.0

• b1275f7 chore: bump versions
• ee7354d docs: add badges
• 1ff4e21 docs: add sample usage for accumulator selector feature
• 4b322db feat: add accumulator selector
• 5e727cd fix: fix compilation error of samples
• 5fb43df fix: regard priority for diagnosis accumulating
• 8813597 fix: regard priority for diagnosis accumulating
• 168c932 test: add tests for accumulator selector