drop some redundant args from Text.draw

Dependencies

• [2] MXA3RZYK deduce left/right from state where possible
• [3] 4VKEE43Z bugfix
• [4] GK47BBCY start passing left/right margins everywhere
• [5] LF7BWEG4 group all editor globals
• [6] LNUHQOGH start passing in Editor_state explicitly
• [7] CVGE3SIG I feel confident now that page-down is working.
• [8] 3TFEAQSW start using some globals
• [9] UHB4GARJ left/right margin -> left/right coordinates
• [10] 2L5MEZV3 experiment: new edit namespace
• [11] H2DPLWMV snapshot: wrapping long lines at word boundaries
• [12] M6TH7VSZ rip out notion of Line_width
• [13] X3F7ECSL add state arg to some functions
• [14] CNCYMM6A make test initializations a little more obvious
• [*] BULPIBEG beginnings of a module for the text editor
• [*] 4KC7I3E2 make colors easier to edit

Change contents

• replacement in text.lua at line 12
  [3.103]→[2.3:52](∅→∅)
  − function Text.draw(State, line, line_index, top)
  [3.103]

  [3.1129]
  + function Text.draw(State, line_index)
• edit in text.lua at line 15
  [17.27]

  [3.1747]
  + local line = State.lines[line_index]
• replacement in text.lua at line 18
  [2.76]→[3.76:92](∅→∅),[3.76]→[3.76:92](∅→∅)
  − local y = top
  [2.76]

  [3.1802]
  + local y = line.starty
• edit in edit.lua at line 41
  [3.94459]→[3.94459:94636](∅→∅)
  − -- startpos, the index of data the line starts rendering from (if currently on screen), can only be >1 for topmost line on screen

  − -- starty, the y coord in pixels
• edit in edit.lua at line 42
  [3.94715]

  [3.94715]
  + -- startpos, the index of data the line starts rendering from (if currently on screen), can only be >1 for topmost line on screen

  + -- starty, the y coord in pixels
• replacement in edit.lua at line 166
  [3.5677]→[2.4585:4669](∅→∅)
  − y, State.screen_bottom1.pos = Text.draw(State, line, line_index, line.starty)
  [3.5677]

  [3.3957]
  + y, State.screen_bottom1.pos = Text.draw(State, line_index)