Arrowing cell by cell is right inside a dense bar and tedious across an
empty one. Three pairs of keys now jump straight to a note that is really
there, one pair for each axis:
Alt+Up/Down the column -- next pitch sounding in this cell
Alt+Left/Right the row -- next note at the cursor's pitch
Ctrl+Alt+Left/Right anywhere -- next note in the take, any pitch
plus Ctrl+Alt+Up/Down for whole-octave movement, which needs no scale
awareness because an octave preserves the pitch class.
All the jumps ignore muted notes, which are not audible content, and the
row and any-note jumps anchor on note starts, so a note held across eight
cells is one stop rather than eight. Landing in a chord takes whichever
note is nearest the pitch you came from rather than always the bottom one.
They sit on Ctrl+Alt rather than plain Ctrl because REAPER already uses
Ctrl+arrows to move between items.
The logic lives in the lib as usual, with four run* drivers following the
runShift pattern, so the eight new action scripts are seven lines each.
test_lib.lua previously dofile'd an absolute D:\ path and so could not run
outside one machine; it now resolves the lib relative to itself. Stubbing
MIDI_GetNote and the PPQ conversions reaches further than the old "pure
logic only" boundary, so the new tests cover the search functions and the
drivers' speech and cursor movement too.
