Use contract for event (musonza#142)

* Use contract for event

* Apply fixes from StyleCI (musonza#143)

add another function to replace 'for' as setUser (musonza#136)

* add another function to replace 'for' as setUser

configurable users primary key (musonza#135)

* configurable users primary key
* remove hardcoded user primary keys

Support laravel 5.8 (musonza#132)

update composer.json

Support laravel 5.8 (musonza#131)

The fire method (which was deprecated in Laravel 5.4) of the Illuminate/Events/Dispatcher class has been removed. You should use the dispatch method instead.

Update composer.json

Update composer.json

add ChatFacade to extra (musonza#126)

Added an extra orderBy in getConversationsList (musonza#124)

* Added an extra orderBy in getConversationsList

Basically, this means: Order by `'mc_conversations.updated_at' desc` but whenever there are duplicated values for update_at then order those values by `'mc_conversations.id' desc.

update readme