@Override
    public void failure(RetrofitError error) {
        error.printStackTrace();
        Toast.makeText(this, R.string.async_error, Toast.LENGTH_SHORT).show();
    }
Checks if an event falls into a specific year and month.
@param event The event to check for.
@param year The year.
@param month The month.
@return True if the event matches the year and month.
sample/src/main/java/com/alamkanak/weekview/sample/AsynchronousActivity.java