Adds more programs.

Adds .gitignore to eleminiate noise in git status

Author: apblack

.gitignore

@@ -0,0 +1,7 @@
+*.c
+*.gcn
+*.gso
+*.gso.dSYM
+*.gso.dSYM/*
+*.js
+*.gct

minitestExamples/lists+sets-Example.grace

@@ -0,0 +1,29 @@
+dialect "minitest"
+
+testSuite {
+    def l = list [1, 3, 5, 2, 4]
+
+    test "list is mutated by add" by {
+        l.add 6
+        assert (l.size) shouldBe (6)
+    }
+
+    test "list unchanged in separate test" by {
+        assert (l.size) shouldBe (5)
+    }
+}
+
+testSuiteNamed "set tests" with {
+    def s = set [1, 3, 5, 2, 4]
+
+    test "set is mutated by add" by {
+        s.add(6)
+        assert (s.size) shouldBe (6)
+    }
+
+    test "set does not contain duplicates" by {
+        s.add(1)
+        s.add(2)
+        assert (s.size) shouldBe (5)
+    }
+}

objectdrawPrograms/raisingSun.grace

@@ -0,0 +1,19 @@
+dialect "objectdraw"
+
+object {
+    inherits graphicApplicationSize (200@200)
+    
+    // Circle representing the sun
+    def sun = filledOvalAt (50 @ 20) size (50 @ 50) on (canvas)
+    sun.color := color.yellow
+
+    // Display instructions
+    textAt (20 @ 20) with ("Drag the mouse up or down") on (canvas)
+
+    // Drag to raise or lower the sun
+    method onMouseDrag (mousePosition: Point) -> Done {
+        sun.moveTo (50 @ mousePosition.y)
+    }
+
+    startGraphics
+}