Add tasks for all the new languages

Task/Fractal-tree/Lingo/fractal-tree-1.lingo

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+----------------------------------------
+-- Creates an image of a fractal tree
+-- @param {integer} width
+-- @param {integer} height
+-- @param {integer} fractalDepth
+-- @param {integer|float} initSize
+-- @param {float} spreadAngle
+-- @param {float} [scaleFactor=1.0]
+-- @return {image}
+----------------------------------------
+on fractalTree (width, height, fractalDepth, initSize, spreadAngle, scaleFactor)
+  if voidP(scaleFactor) then scaleFactor = 1.0
+  img = image(width, height, 24)
+  img.fill(img.rect, rgb(0,0,0))
+  _drawTree(img, width/2, height, -PI/2, fractalDepth, initSize, spreadAngle, scaleFactor)
+  return img
+end
+
+on _drawTree (img, x1, y1, angle, depth, size, spreadAngle, scaleFactor)
+  if (depth) then
+    x2 = x1 + cos(angle)*depth*size
+    y2 = y1 + sin(angle)*depth*size
+    img.draw(x1, y1, x2, y2, [#color:rgb(255,255,255)])
+    _drawTree(img, x2, y2, angle-spreadAngle, depth-1, size*ScaleFactor, spreadAngle, scaleFactor)
+    _drawTree(img, x2, y2, angle+spreadAngle, depth-1, size*ScaleFactor, spreadAngle, scaleFactor)
+  end if
+end

Task/Fractal-tree/Lingo/fractal-tree-2.lingo

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+fractalDepth = 10
+initSize = 7.0
+spreadAngle = 35*PI/180
+scaleFactor = 0.95
+img = fractalTree(480, 380, fractalDepth, initSize, spreadAngle, scaleFactor)