Sketch: Remove uppercase on post titles in editor, as it's confusing and can make it tricky to know what case you're actually entering your text in as.

sketch/css/editor-blocks.css

@@ -55,7 +55,6 @@ Description: Used to style Gutenberg Blocks in the editor.
 	font-size: 28px;
 	font-weight: normal;
 	letter-spacing: 1px;
-	text-transform: uppercase;
 }
 
 /* Headings */