tweak modifier keys to include 'shift'

Dependencies

• [2] 6LJZN727 handle chords
• [3] G6OYAYHU paste in text with M-v
• [4] 2HW3HUCG M-left/M-right for word-based motions

Change contents

• edit in keychord.lua at line 20
  [2.1081]

  [2.1081]
  + if down('lshift') or down('rshift') then

  + result = result..'S-' -- don't try to use this with letters/digits

  + end
• replacement in keychord.lua at line 24
  [2.1120]→[2.1120:1146](∅→∅)
  − result = result..'S-'
  [2.1120]

  [2.1146]
  + result = result..'s-'