volume level normalization and tiny things

moon2requested to merge
moon2/ccchaoscillator-xxiii:main into main
  • normalized volume to keep up with other apps (looks a little high on rms meter but feels right, presumably bc low overtone content?)
  • added get_help() method for onboard help viewer
  • fix reentry
  • updated to new bl00mbox api
  • bumped to version 4

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