some unnecessary mutations

Dependencies

• [2] CUIV2LE5 some typos
• [3] KOYAJWE4 extract a couple more methods
• [4] SVJZZDC3 snapshot - no, that's all wrong
• [5] MDXGMZU2 disable all debug prints
• [6] DHI6IJCN selecting text and deleting selections
• [7] HOSPP2AN crisp font rendering
• [8] 2RXZ3PGO beginning of a new approach to scroll+wrap
• [9] U7M4M2F7 bugfix: don't rely on Screen_bottom1 while scrolling
• [10] NQWWTGXR switch undo/redo to ctrl- hotkeys
• [11] 65XHTZEK regression: couldn't do many drawing operations because line.y was reset
• [12] 242L3OQX bugfix: ensure Cursor_line is always on a text line
• [13] LS55YKGW switch copy/paste to ctrl- hotkeys
• [14] GN3IF4WF bugfix: pasting newlines
• [15] YTSPVDZH first successful pagedown test, first bug found by test
• [16] ZPUQSPQP extract a few methods
• [17] AYE2VEGJ extract a couple of methods
• [*] BULPIBEG beginnings of a module for the text editor
• [*] OTIBCAUJ love2d scaffold

Change contents

• edit in text.lua at line 367
  [3.674]→[3.674:710](∅→∅)
  − Screen_top1.line = Cursor1.line
• edit in text.lua at line 486
  [3.3477]→[3.3477:3515](∅→∅)
  − Screen_top1.line = Cursor1.line
• edit in text.lua at line 504
  [2.154]→[3.4593:4631](∅→∅),[3.4593]→[3.4593:4631](∅→∅)
  − Screen_top1.line = Cursor1.line
• edit in text.lua at line 616
  [3.1581]→[3.6916:6952](∅→∅),[3.2177]→[3.6916:6952](∅→∅),[3.6916]→[3.6916:6952](∅→∅)
  − Screen_top1.line = Cursor1.line
• edit in main.lua at line 347
  [3.1171]→[3.1171:1235](∅→∅)
  − Screen_top1.line = Cursor1.line

  − Screen_top1.pos = 1
• edit in main.lua at line 354
  [3.1766]→[3.1766:1830](∅→∅)
  − Screen_top1.line = Cursor1.line

  − Screen_top1.pos = 1