Update version to 0.4.25 in package.json and bower.json

Version 0.4.24:

* Fix bug in getRoutes (see #373)

Version 0.4.23:

* Fix bug at trying to remove a large amount of markers inside a marker cluster (see #473)
* Check for Google Maps library before creating a GMaps object (see #467)
* Check the Google Maps API at instantiation instead of declaration (see #467)
* Add polyfill for google.maps.Rectangle.prototype.containsLatLng

Update bower.json

Better check for `console.error`

Show an error in the console, instead throwing an error

Merge and fix conflicts

Update version (0.4.18)

Update version (0.4.17)

Update version (0.4.16)