#750 Add widow control

src/file/paragraph/formatting/alignment.spec.ts

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+import { expect } from "chai";
+
+import { Formatter } from "export/formatter";
+import { Alignment, AlignmentType } from "./alignment";
+
+describe("Alignment", () => {
+    it("should create", () => {
+        const alignment = new Alignment(AlignmentType.BOTH);
+        const tree = new Formatter().format(alignment);
+
+        expect(tree).to.deep.equal({
+            "w:jc": {
+                _attr: {
+                    "w:val": "both",
+                },
+            },
+        });
+    });
+});

src/file/paragraph/formatting/widow-control.spec.ts

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+import { expect } from "chai";
+
+import { Formatter } from "export/formatter";
+
+import { WidowControl } from "./widow-control";
+
+describe("WidowControl", () => {
+    it("should create", () => {
+        const widowControl = new WidowControl(true);
+        const tree = new Formatter().format(widowControl);
+
+        expect(tree).to.deep.equal({
+            "w:widowControl": {
+                _attr: {
+                    "w:val": true,
+                },
+            },
+        });
+    });
+});

src/file/paragraph/formatting/widow-control.ts

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+// http://www.datypic.com/sc/ooxml/e-w_widowControl-1.html
+import { XmlAttributeComponent, XmlComponent } from "file/xml-components";
+
+export class WidowControlAttributes extends XmlAttributeComponent<{ readonly val: boolean }> {
+    protected readonly xmlKeys = { val: "w:val" };
+}
+
+export class WidowControl extends XmlComponent {
+    constructor(value: boolean) {
+        super("w:widowControl");
+        this.root.push(new WidowControlAttributes({ val: value }));
+    }
+}