[step] cleaned up, refactored, plus share some methods for toplevel slide access
[step] cleaned up, refactored, plus share some methods for toplevel slide access

alexjobs/deck.js-1,alexjobs/deck.js-1,twitwi/deck.js,twitwi/deck.js,ProgRT/deck.js,alexjobs/deck.js-1,ProgRT/deck.js,ProgRT/deck.js,twitwi/deck.js