Prevent Array To String Conversion Notice

When you send a broadcast, the $to variable is an array. So, when you concatenate $to with a string you are going to get "Array to String conversion notice."
Merge pull request #707 from SikiFn/patch-2

Prevent Array To String Conversion Notice
Prevent Array To String Conversion Notice

When you send a broadcast, the $to variable is an array. So, when you concatenate $to with a string you are going to get "Array to String conversion notice."
Added sendSetGroupSubject

Fixes #701
Merge branch 'master' of https://github.com/venomous0x/WhatsAPI
Update bulk.php , remove contacts.php [old file ]
Merge pull request #732 from mofakfree/patch-1

Update bulk.php , remove contacts.php [old file ]
Add Send vCard In Broadcast Functionality
Merge pull request #738 from SikiFn/patch-3

Add Send vCard In Broadcast Functionality
Update WhatsAppEvent.php

Adding Missing "name" Argument To Prevent "Warning: Missing argument 3 for WhatsAppEventListenerProxy::onSendPresence()"
Merge pull request #772 from SikiFn/patch-4

Update WhatsAppEvent.php
Update whatsprot.class.php

Adding Missing "name" Argument To Prevent "Warning: Missing argument 3 for WhatsAppEventListenerProxy::onSendPresence()"
Merge pull request #773 from SikiFn/patch-5

Update whatsprot.class.php
firePresence return "unavailable"

A fix for firePresence. When using the event and want the $type value, it only shows 'unavailable', now returns also 'available'.
Merge pull request #774 from mgp25/patch-2

firePresence return "unavailable"
Updated bulk.php

Deprecated functions from older file was used. Now its working.
Merge pull request #776 from mgp25/patch-4

Updated bulk.php
now fireMessageReceivedClient works
Merge pull request #782 from mgp25/patch-5

Olala
Fixes #777
sendSetProfilePicture supports an url as argument