Merge function-builder branch into master

src/commonMain/kotlin/nl/astraeus/css/properties/Isolation.kt

@@ -0,0 +1,14 @@
+package nl.astraeus.css.properties
+
+class Isolation(
+    value: String
+) : CssProperty(value) {
+
+    companion object {
+        val auto = Isolation("auto")
+        val isolate = Isolation("isolate")
+        val initial = Isolation("initial")
+        val inherit = Isolation("inherit")
+    }
+
+}