[pinpoint] (12 commits) ...stack slides vertically in speaker screen

[Ãyvind KolÃs <ok src gnome org>]

Summary of changes:

  8c717f4... add parsing of speaker notes (*)
  472c576... move documentation of global state to header (*)
  5f5995a... add the start of a speaker screen (*)
  841aedd... add serialization code (*)
  ffdd5fc... added speakermode and rehearse commandline options (*)
  810d89b... serialize markup/no-markup (*)
  175711b... add rehearsal mode and autoplayback (*)
  faa24a3... add a keybinding to create/toggle speaker screen (*)
  a92bb03... run with previous timings for presentation progress (*)
  bece969... update time summary properly (*)
  116ce72... fix timing, make time appear in one bar (*)
  a04f256... stack slides vertically in speaker screen (*)

(*) This commit already existed in another branch; no separate mail sent