Fix #192 => Add reversedStacks for AAXAxis and AAYAxis

charts/src/main/java/com/github/aachartmodel/aainfographics/aaoptionsmodel/AAAxis.kt

@@ -20,6 +20,7 @@ enum class AAChartAxisType(val value: String) {
     var categories: Array<String>? = null
     var linkedTo: Int? = null
     var reversed: Boolean? = null
+    var reversedStacks: Boolean? = null
     var opposite: Boolean? = null
     var lineWidth: Number? = null //坐标轴轴线宽度
     var lineColor: String? = null //坐标轴轴线线颜色

charts/src/main/java/com/github/aachartmodel/aainfographics/aaoptionsmodel/AAXAxis.kt

@@ -65,6 +65,11 @@ open class AAXAxis: AAAxis() {
         return this
     }
 
+    fun reversedStacks(prop: Boolean?): AAXAxis {
+        reversedStacks = prop
+        return this
+    }
+
     fun gridLineWidth(prop: Number?): AAXAxis {
         gridLineWidth = prop
         return this

charts/src/main/java/com/github/aachartmodel/aainfographics/aaoptionsmodel/AAYAxis.kt

@@ -71,6 +71,11 @@ open class AAYAxis: AAAxis() {
         return this
     }
 
+    fun reversedStacks(prop: Boolean?): AAYAxis {
+        reversedStacks = prop
+        return this
+    }
+
     fun gridLineWidth(prop: Number?): AAYAxis {
         gridLineWidth = prop
         return this