Fix missing encoding options (quality) parameter in `canvas.toDataURL…

…()` (#1382)

* Add missing opts parameter

* Add changelog entry

CHANGELOG.md

@@ -10,6 +10,7 @@ project adheres to [Semantic Versioning](http://semver.org/).
 ### Changed
 ### Added
 ### Fixed
+* Fix encoding options (quality) parameter in `canvas.toDataURL()`
 
 2.4.0
 ==================

lib/canvas.js

@@ -108,6 +108,6 @@ Canvas.prototype.toDataURL = function(a1, a2, a3){
       fn(null, `data:${type};base64,${buf.toString('base64')}`);
     }, type, opts)
   } else {
-    return `data:${type};base64,${this.toBuffer(type).toString('base64')}`
+    return `data:${type};base64,${this.toBuffer(type, opts).toString('base64')}`
   }
 };