omits oblique and changes to variable fonts

src/style/_text.scss

@@ -2,6 +2,11 @@
     font-style: italic;
 }
 
-.oblique {
-    font-style: oblique;
+h1,
+h2,
+h3,
+h4,
+h5,
+h6 {
+    @include fraunces-font(normal, 700);
 }