ctrl-+ and ctrl-- to adjust font size

Dependencies

• [2] HDCVGN6G save each line's y coordinate, whether it's a drawing or not
• [3] 2INHXC3K position cursor by clicking on text
• [4] UTF73CBL reorg
• [5] RJGZD4IN binary search to most natural up/down with proportional fonts
• [6] IFGAJAF7 add a level of indirection to vertices of shapes
• [7] HJ3PM2VT .
• [8] OTIBCAUJ love2d scaffold
• [9] KHFU5NFD bugfix: up/down across drawings
• [10] JCSLDGAH beginnings of support for multiple shapes
• [11] ZUOL7X6V move
• [12] QU7NHFOV show cursor
• [13] 4NDYV4WD fix 2 bugs in line selection
• [14] 3CS5KKCI up/down cursor movement
• [15] 7RN3AETY bugfix: text sometimes getting colored like drawing borders
• [16] VVXVV2D2 change data model; text can now have metadata
• [17] ZD63LJ2T bugfix: keep the click to create a new drawing from creating a new shape in the drawing
• [18] XX7G2FFJ intermingle freehand line drawings with text
• [*] JVRL5TWL store device-independent coordinates inside drawings
• [*] YKRF5V3Z starting to load/save
• [*] JS6JSYOT online contextual help

Change contents

• edit in main.lua at line 55
  [20.313]

  [21.3]
  +

  + zoom = 1.5
• replacement in main.lua at line 93
  [5.36]→[5.59:72](∅→∅),[5.370]→[5.59:72](∅→∅)
  − y = y+25
  [5.36]

  [2.1]
  + y = y+15*zoom
• replacement in main.lua at line 162
  [5.38]→[5.1249:1294](∅→∅),[5.73]→[5.1249:1294](∅→∅),[5.546]→[5.1249:1294](∅→∅),[5.1249]→[5.1249:1294](∅→∅)
  − love.graphics.draw(text, 25,y, 0, 1.5)
  [5.546]

  [5.1]
  + love.graphics.draw(text, 25,y, 0, zoom)
• replacement in main.lua at line 205
  [3.229]→[3.229:280](∅→∅)
  − if x >= 16 and y >= line.y and y < y+25 then
  [3.229]

  [3.280]
  + if x >= 16 and y >= line.y and y < y+15*zoom then
• edit in main.lua at line 600
  [5.921]

  [4.656]
  + elseif chord == 'C-=' then

  + zoom = zoom+0.5

  + elseif chord == 'C--' then

  + zoom = zoom-0.5
• replacement in main.lua at line 747
  [5.739]→[3.616:662](∅→∅)
  − return 25+text_before_cursor:getWidth()*1.5
  [5.739]

  [5.778]
  + return 25+text_before_cursor:getWidth()*zoom
• edit in main.lua at line 1098
  [22.1988]

  [22.1988]
  + love.graphics.print("* Press 'ctrl+=' or 'ctrl+-' to zoom in or out", 16+30,y)

  + y = y+15