Refined Advanced Cherry-Pick slide content
Formatted and edited Advanced Collaboration slide content
Segmented, Refined Customizing Advanced slide content
Add Advanced Bundle chapter initial content
Draft out Advanced slide Bundle content
sniff slide ID from slide/section title for better permalinks
remove generic title/description, move include to layout for simplicity
w h i t e  s p a c e
remove commented out code
properly respect cover flag
properly respect header flag
strip demo css, add in bare bones structural css as standalone file
include core css in impress deck
Update Advanced Collaboration chapter slides
Add Advanced Service-Hooks chapter
Add updated notes to RefSpec chapter, remove "TBD" note
Add notes to rerere chapter
Add Filter-Branc notes for all option flag basics
Fix missing "git" in checkout examples
Add notes for push.default