Merge lines.love

Dependencies

• [2] MUJTM6RE bring back a level of wrapping
• [3] KV7GGVER couple of accidental globals
• [4] MD3W5IRA new fork: rip out drawing support
• [5] LF7BWEG4 group all editor globals
• [6] ILOA5BYF separate data structure for each line's cache data
• [7] ZPUQSPQP extract a few methods
• [8] Z5HLXU4P add state arg to a few functions
• [9] TGHAJBES use line cache for drawings as well
• [10] MXA3RZYK deduce left/right from state where possible
• [*] BULPIBEG beginnings of a module for the text editor

Change contents

• edit in text.lua at line 436
  [4.1956]

  [2.4197]
  + local new_screen_line_starting_pos = State.line_cache[State.cursor1.line].screen_line_starting_pos[screen_line_index-1]
• edit in text.lua at line 439
  [4.1956]→[3.3:127](∅→∅),[4.1956]→[3.3:127](∅→∅)
  − local new_screen_line_starting_pos = State.line_cache[State.cursor1.line].screen_line_starting_pos[screen_line_index-1]
• resolve order conflict in text.lua at line 439
  [2.4427]

  [4.1139]