chore(project): Prep for version 1.4.0

Author: Hussein Aladeen

extra/gradle/libraries.gradle

@@ -9,7 +9,7 @@ ext {
 
     //library
     libraryGroup = 'com.github.fueled'
-    libraryVersion = '1.2.3'
+    libraryVersion = '1.4.0'
 
     //android libraries
     supportVersion = '25.1.1'
@@ -61,4 +61,4 @@ ext {
             googleTruth       : "com.google.truth:truth:${googleTruthVersion}"
     ]
 
-}
+}