Fix \Large roots (#1485)

* Fix roots

* Update screenshots

* Added a test in a craven gambit to get a green check mark

* Adjust small radicals

* Fix lint error

* Update screenshots

test/katex-spec.js

@@ -1279,6 +1279,10 @@ describe("A sqrt parser", function() {
 
         expect(parse.type).toEqual("sqrt");
     });
+
+    it("should build sized square roots", function() {
+        expect("\\Large\\sqrt[3]{x}").toBuild();
+    });
 });
 
 describe("A TeX-compliant parser", function() {

test/screenshotter/ss_data.yaml

@@ -312,7 +312,10 @@ Sqrt: |
     \sqrt{\sqrt{\sqrt{x}}}_{\sqrt{\sqrt{x}}}^{\sqrt{\sqrt{\sqrt{x}}}
     ^{\sqrt{\sqrt{\sqrt{x}}}}}
 SqrtRoot: |
-    1+\sqrt[3]{2}+\sqrt[1923^234]{2^{2^{2^{2^{2^{2^{2^{2^{2^{2^{2^2}}}}}}}}}}}
+    \begin{array}{l}
+        1+\sqrt[3]{2}+\sqrt[1923^234]{2^{2^{2^{2^{2^{2^{2^{2^{2^{2^{2^2}}}}}}}}}}} \\
+        \Huge \sqrt[3]{M} + x^{\sqrt[3] a}
+    \end{array}
 StackRel: a \stackrel{?}{=} b \stackrel{\text{def}}{=} c
 StretchyAccent: |
     \begin{array}{l}