update position indicator "globally"
more correct segment->map

This fixes phrase-start and phrase-end problems.
draw mismatched phrase-end phrases
empty text on new note value
focus new value text field
new value is red if no value provided
repaint score after phrase update
moved update-player! to score ui
position! and position listener
position-setter-component
clamp position
clamp position in player
get-sequencer
initial draw-position-ticks
scale position display properly
scale phrase component properly
initial update-segment!
core/bind-space