Merge with master

Author: javierbrea

CHANGELOG.md

@@ -16,7 +16,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [1.3.0] - 2019-10-10
 
-## [1.2.0] - 2019-10-10
+
+## [1.2.0] - 2019-10-14
 ### Added
 - Accept options object in Origin constructor as last argument.
 - Assign to the `_id` private property the value received in new option "uuid", when received.

docs/sources/api.md

@@ -4,7 +4,7 @@
 
 * size `sources.size` - Getter returning current size of mercury sources created.
 * elements `sources.elements` - Getter returning an `<Array>` containing all mercury sources created.
-* getBytag `sources.getByTags(tag)`
+* getBytag `sources.getByTag(tag)`
 	* Alias - `getByTag`
 	* Arguments
 		* tag - `<String>` Tag to filter sources by.