diff --git a/build.gradle b/build.gradle
index c27806a4..64306256 100644
--- a/build.gradle
+++ b/build.gradle
@@ -18,7 +18,7 @@ def openrndrUseSnapshot = false
 apply plugin: 'org.jetbrains.dokka'
 
 project.ext {
-    openrndrVersion = openrndrUseSnapshot? "0.4.0-SNAPSHOT" : "0.3.45-rc.5"
+    openrndrVersion = openrndrUseSnapshot? "0.4.0-SNAPSHOT" : "0.3.45-rc.6"
     kotlinVersion = "1.4.0"
     spekVersion = "2.0.12"
     libfreenectVersion = "0.5.7-1.5.4"
diff --git a/openrndr-demos/src/demo/kotlin/DemoAnimation01.kt b/openrndr-demos/src/demo/kotlin/DemoAnimation01.kt
new file mode 100644
index 00000000..eb93afb4
--- /dev/null
+++ b/openrndr-demos/src/demo/kotlin/DemoAnimation01.kt
@@ -0,0 +1,30 @@
+import org.openrndr.animatable.Animatable
+import org.openrndr.animatable.easing.Easing
+import org.openrndr.application
+import org.openrndr.math.Vector2
+import org.openrndr.shape.contour
+
+fun main() = application {
+    program {
+      class A: Animatable() {
+            var x = 0.0
+            var y = Vector2(200.0, 200.0)
+        }
+
+        val a = A()
+        a.apply {
+            ::y.animate(Vector2.ZERO, 10000, Easing.CubicInOut)
+            ::x.animate(100.0, 5000).completed.listen {
+                println("hello world")
+                ::x.animate(1.0, 5000).completed.listen {
+                    println("we meet again")
+                }
+            }
+        }
+
+        extend {
+            a.updateAnimation()
+            drawer.circle(a.y, 10.0)
+        }
+    }
+}
\ No newline at end of file
diff --git a/openrndr-demos/src/demo/kotlin/DemoAnimation02.kt b/openrndr-demos/src/demo/kotlin/DemoAnimation02.kt
new file mode 100644
index 00000000..55ae183b
--- /dev/null
+++ b/openrndr-demos/src/demo/kotlin/DemoAnimation02.kt
@@ -0,0 +1,25 @@
+import org.openrndr.animatable.Animatable
+import org.openrndr.animatable.easing.Easing
+import org.openrndr.application
+import org.openrndr.math.Vector2
+import org.openrndr.shape.contour
+
+fun main() = application {
+    program {
+        val a = object {
+            var x = 0.0
+        }
+
+        animate {
+            updateAnimation()
+            a::x.animate(1000.0, 5000, Easing.CubicInOut)
+            a::x.complete()
+            a::x.animate(0.0, 5000, Easing.CubicInOut)
+
+        }
+        extend {
+            drawer.circle(a.x, height/2.0, 40.0)
+        }
+
+    }
+}
\ No newline at end of file
diff --git a/openrndr-demos/src/demo/kotlin/DemoCompositionDrawer02.kt b/openrndr-demos/src/demo/kotlin/DemoCompositionDrawer02.kt
new file mode 100644
index 00000000..7f0f4544
--- /dev/null
+++ b/openrndr-demos/src/demo/kotlin/DemoCompositionDrawer02.kt
@@ -0,0 +1,25 @@
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.shape.ClipMode
+import org.openrndr.shape.drawComposition
+
+fun main() {
+    application {
+        program {
+            val cd = drawComposition {
+                fill = null
+                circle(width / 2.0, height / 2.0, 100.0)
+
+                fill = ColorRGBa.BLACK
+                clipMode = ClipMode.REVERSE_DIFFERENCE
+                circle(width / 2.0 + 50.0, height / 2.0, 100.0)
+            }
+
+
+            extend {
+                drawer.clear(ColorRGBa.PINK)
+                drawer.composition(cd)
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/openrndr-demos/src/demo/kotlin/DemoCompositionDrawer03.kt b/openrndr-demos/src/demo/kotlin/DemoCompositionDrawer03.kt
new file mode 100644
index 00000000..dc482c4d
--- /dev/null
+++ b/openrndr-demos/src/demo/kotlin/DemoCompositionDrawer03.kt
@@ -0,0 +1,27 @@
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.shape.ClipMode
+import org.openrndr.shape.drawComposition
+
+fun main() {
+    application {
+        program {
+            val cd = drawComposition {
+                fill = null
+                clipMode = ClipMode.REVERSE_DIFFERENCE
+
+                circle(width / 2.0-50.0, height / 2.0, 100.0)
+                circle(width / 2.0+50.0, height / 2.0, 100.0)
+
+                fill = ColorRGBa.BLACK
+                circle(width / 2.0, height / 2.0, 100.0)
+            }
+
+
+            extend {
+                drawer.clear(ColorRGBa.PINK)
+                drawer.composition(cd)
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/openrndr-demos/src/demo/kotlin/DemoContour03.kt b/openrndr-demos/src/demo/kotlin/DemoContour03.kt
new file mode 100644
index 00000000..cd9fb510
--- /dev/null
+++ b/openrndr-demos/src/demo/kotlin/DemoContour03.kt
@@ -0,0 +1,45 @@
+import org.openrndr.application
+import org.openrndr.color.ColorRGBa
+import org.openrndr.draw.isolated
+import org.openrndr.shape.Circle
+import org.openrndr.shape.Rectangle
+
+fun main() {
+    application {
+        configure {
+            width = 720
+            height = 720
+        }
+
+        program {
+
+            val cs = Rectangle(0.0, 0.0, 200.0, 200.0).contour
+            val cc = Circle(100.0, 0.0, 100.0).contour
+
+            extend {
+                drawer.fill = ColorRGBa.GRAY
+                drawer.stroke = ColorRGBa.PINK
+                drawer.isolated {
+                    drawer.contour(cs)
+                    drawer.translate(300.0, 0.0)
+
+                    // this should create a contour similar to the input contour
+                    drawer.contour(cs.sampleEquidistant(4))
+                    drawer.contour(cs.sampleEquidistant(3))
+                }
+
+                drawer.isolated {
+                    drawer.translate(.0, 400.0)
+                    drawer.contour(cc)
+                    drawer.translate(300.0, 0.0)
+
+                    drawer.contour(cc)
+                    // this should draw a hexagon
+                    drawer.contour(cc.sampleEquidistant(6))
+                    // this should draw a triangle
+                    drawer.contour(cc.sampleEquidistant(3))
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/openrndr-demos/src/demo/kotlin/DemoContourIntersections03.kt b/openrndr-demos/src/demo/kotlin/DemoContourIntersections03.kt
index eab7e384..28df18fa 100644
--- a/openrndr-demos/src/demo/kotlin/DemoContourIntersections03.kt
+++ b/openrndr-demos/src/demo/kotlin/DemoContourIntersections03.kt
@@ -26,9 +26,9 @@ fun main() = application {
                 translate(width * 0.5, height * 0.5)
                 fill = null
                 stroke = ColorRGBa.BLACK
-                lineJoin = LineJoin.ROUND
                 contour(contour)
                 fill = ColorRGBa.PINK.opacify(0.3)
+
                 circles(ints.map { it.position }, 10.0)
             }
         }
diff --git a/openrndr-demos/src/demo/kotlin/DemoMouseCursor01.kt b/openrndr-demos/src/demo/kotlin/DemoMouseCursor01.kt
new file mode 100644
index 00000000..3e36347d
--- /dev/null
+++ b/openrndr-demos/src/demo/kotlin/DemoMouseCursor01.kt
@@ -0,0 +1,21 @@
+import org.openrndr.CursorType
+import org.openrndr.application
+
+fun main() {
+    application {
+        program {
+            keyboard.character.listen {
+                if (it.character == 'c') {
+                    mouse.cursorVisible = !mouse.cursorVisible
+                }
+            }
+            extend {
+                if (mouse.position.x < width/2.0) {
+                    mouse.cursorType = CursorType.ARROW_CURSOR
+                } else {
+                    mouse.cursorType = CursorType.HAND_CURSOR
+                }
+            }
+        }
+    }
+}
\ No newline at end of file