fix(spider-execution-manager): Send prev_assignment at most once per next_task call (fixes #429). - #430

fix(spider-execution-manager): Send prev_assignment at most once per next_task call (fixes #429).#430

LinZhihao-723 merged 3 commits into

y-scope:mainy-scope/spider:mainfrom

jackluo923:fix/em-resends-prev-assignmentjackluo923/spider:fix/em-resends-prev-assignmentCopy head branch name to clipboard