Release v0.7.8

• Merge pull request #584 from kratsg/feat/nanodelphes
• Merge pull request #590 from btovar/wq_correct_time_stat
• Merge pull request #589 from btovar/wq_custom_setup
• Merge pull request #588 from btovar/wq_arg_doc_fixes
• Merge pull request #587 from btovar/wq_dynamic_doc
• Merge pull request #586 from btovar/wq_proc_item
• Merge pull request #582 from CoffeaTeam/old_executor_fix
• Merge pull request #581 from CoffeaTeam/regular-nano
• Merge pull request #557 from pfackeldey/feature/dispatchable-executors