diff --git a/gradle.properties b/gradle.properties
index 46ae1c3..2875105 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,15 +1,15 @@
 # sytleguide
 kotlin.code.style=official
 
-# Kotlin 1.4.20-RC: https://github.com/korlibs/easy-kotlin-mpp-gradle-plugin
-easyPluginVersion=0.11.2
+# Kotlin 1.4.20: https://github.com/korlibs/easy-kotlin-mpp-gradle-plugin
+easyPluginVersion=0.12.0
 
 # version
 group=com.soywiz.korlibs.korma
 version=2.0.0-SNAPSHOT
 
 # korlibs
-kdsVersion=2.0.0-rc3
+kdsVersion=2.0.0
 
 # bintray location
 project.bintray.org=korlibs
diff --git a/korma/src/commonMain/kotlin/com/soywiz/korma/geom/Matrix.kt b/korma/src/commonMain/kotlin/com/soywiz/korma/geom/Matrix.kt
index e783b9a..befb844 100644
--- a/korma/src/commonMain/kotlin/com/soywiz/korma/geom/Matrix.kt
+++ b/korma/src/commonMain/kotlin/com/soywiz/korma/geom/Matrix.kt
@@ -5,6 +5,7 @@ package com.soywiz.korma.geom
 import com.soywiz.korma.interpolation.Interpolable
 import com.soywiz.korma.interpolation.MutableInterpolable
 import com.soywiz.korma.interpolation.interpolate
+import kotlin.jvm.*
 import kotlin.math.*
 
 data class Matrix(
@@ -82,8 +83,12 @@ data class Matrix(
     fun setTo(a: Float, b: Float, c: Float, d: Float, tx: Float, ty: Float): Matrix = setTo(a.toDouble(), b.toDouble(), c.toDouble(), d.toDouble(), tx.toDouble(), ty.toDouble())
     fun setTo(a: Int, b: Int, c: Int, d: Int, tx: Int, ty: Int): Matrix = setTo(a.toDouble(), b.toDouble(), c.toDouble(), d.toDouble(), tx.toDouble(), ty.toDouble())
 
-    fun copyFrom(that: Matrix): Matrix {
-        setTo(that.a, that.b, that.c, that.d, that.tx, that.ty)
+    fun copyFrom(that: Matrix?): Matrix {
+        if (that != null) {
+            setTo(that.a, that.b, that.c, that.d, that.tx, that.ty)
+        } else {
+            identity()
+        }
         return this
     }
 
@@ -172,6 +177,17 @@ data class Matrix(
         l.tx * r.b + l.ty * r.d + r.ty
     )
 
+    @JvmName("multiplyNullable")
+    fun multiply(l: Matrix?, r: Matrix?): Matrix {
+        when {
+            l != null && r != null -> multiply(l, r)
+            l != null -> copyFrom(l)
+            r != null -> copyFrom(r)
+            else -> identity()
+        }
+        return this
+    }
+
     /** Transform point without translation */
     fun deltaTransformPoint(point: IPoint, out: Point = Point()) = deltaTransformPoint(point.x, point.y, out)
     fun deltaTransformPoint(x: Float, y: Float, out: Point = Point()): Point = deltaTransformPoint(x.toDouble(), y.toDouble(), out)
@@ -480,3 +496,4 @@ data class Matrix(
 
     override fun toString(): String = "Matrix(a=$a, b=$b, c=$c, d=$d, tx=$tx, ty=$ty)"
 }
+
diff --git a/korma/src/commonMain/kotlin/com/soywiz/korma/geom/Rectangle.kt b/korma/src/commonMain/kotlin/com/soywiz/korma/geom/Rectangle.kt
index 0c49652..db18e91 100644
--- a/korma/src/commonMain/kotlin/com/soywiz/korma/geom/Rectangle.kt
+++ b/korma/src/commonMain/kotlin/com/soywiz/korma/geom/Rectangle.kt
@@ -152,6 +152,8 @@ data class Rectangle(
     //override fun toString(): String = "Rectangle([${left.niceStr}, ${top.niceStr}]-[${right.niceStr}, ${bottom.niceStr}])"
     override fun toString(): String = "Rectangle(x=${x.niceStr}, y=${y.niceStr}, width=${width.niceStr}, height=${height.niceStr})"
     fun toStringBounds(): String = "Rectangle([${left.niceStr},${top.niceStr}]-[${right.niceStr},${bottom.niceStr}])"
+    fun toStringSize(): String = "Rectangle([${left.niceStr},${top.niceStr}],[${width.niceStr},${height.niceStr}])"
+    fun toStringCompat(): String = "Rectangle(x=${left.niceStr}, y=${top.niceStr}, w=${width.niceStr}, h=${height.niceStr})"
 
     override fun interpolateWith(ratio: Double, other: Rectangle): Rectangle =
         Rectangle().setToInterpolated(ratio, this, other)
@@ -167,6 +169,18 @@ data class Rectangle(
         out.setTo(left + width * anchor.sx, top + height * anchor.sy)
 
     fun toInt() = RectangleInt(x, y, width, height)
+    fun floor(): Rectangle {
+        setTo(kotlin.math.floor(x), kotlin.math.floor(y), kotlin.math.floor(width), kotlin.math.floor(height))
+        return this
+    }
+    fun round(): Rectangle {
+        setTo(kotlin.math.round(x), kotlin.math.round(y), kotlin.math.round(width), kotlin.math.round(height))
+        return this
+    }
+    fun ceil(): Rectangle {
+        setTo(kotlin.math.ceil(x), kotlin.math.ceil(y), kotlin.math.ceil(width), kotlin.math.ceil(height))
+        return this
+    }
 }
 
 inline fun Rectangle.setTo(x: Number, y: Number, width: Number, height: Number) =