Expand notification api with reference and more events

[andreascreten]

Changes

• Added a reference to the notifications so that you can identify which notification was clicked.

Added

• Implemented more events for notifications: reply, action, and close.

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Goes hand in hand with NativePHP/laravel#498

[SRWieZ]

I tested the changes, and everything is working as expected. I just encountered an error when sending two notifications one after the other, and they had the same reference.

Next time, try to put your changes in another branch so I can edit myself :)

[andreascreten]

Next time, try to put your changes in another branch so I can edit myself :)

Noted! I pushed the fix for the reference.