fix(#209): Fixes issue with options not being preserved when individually set. (#211)

src/diff-view.js

@@ -449,7 +449,6 @@ CodeMirrorDiffView.prototype.bind = function(container) {
 			ev.preventDefault();
 			return;
 		}
-		const ed = this.editor[side];
 		// See if the user clicked the line number of a difference:
 		let found = false;
 		for (let i = 0; i < this.changes.length; ++i) {

src/mergely.js

@@ -122,13 +122,11 @@ class Mergely {
 		const colors = dom.getColors(this.el);
 		this._options = {
 			...defaultOptions,//lgpl
-			...this._initOptions,
+			...(this._options || this._initOptions),
 			...options//lgpl-separate-notice
 		};
 		this._viewOptions = {
-			...defaultOptions,
-			...this._initOptions,
-			...options,
+			...this._options,
 			_colors: colors
 		};
 	}