add args to some functions

Dependencies

• [2] 2H67P75X switch arg for a function
• [3] BULPIBEG beginnings of a module for the text editor
• [4] 2RXZ3PGO beginning of a new approach to scroll+wrap
• [5] V5MJRFOZ bugfix: down arrow doesn't scroll up unnecessarily
• [6] P66MRF3U bugfix: don't append metadata when it already exists
• [7] ZHLO7K3M add args to some functions
• [8] HYEAFRZ2 split mouse_pressed events between Text and Drawing
• [9] CBPV5SSI stop handling nil screen_line_starting_pos everywhere
• [10] 242L3OQX bugfix: ensure Cursor_line is always on a text line
• [11] CCYSVZA2 bugfix: BSOD in #4.
• [12] PR4KIAZD first stab at equally hacky cursor down support
• [13] MDXGMZU2 disable all debug prints
• [14] SVJZZDC3 snapshot - no, that's all wrong
• [15] ZPUQSPQP extract a few methods
• [16] AIRIP35Z cleaner

Change contents

• replacement in text.lua at line 459
  [3.2871]→[3.2871:2916](∅→∅)
  − if Text.cursor_at_final_screen_line() then
  [3.2871]

  [3.2916]
  + if Text.cursor_at_final_screen_line(left, right) then
• replacement in text.lua at line 601
  [3.6]→[3.1667:1711](∅→∅)
  − function Text.cursor_at_final_screen_line()
  [3.6]

  [2.315]
  + function Text.cursor_at_final_screen_line(left, right)